An article of footwear with an undulating sole provides a different and unique ride and/or feel to the article of footwear, while also providing a unique aesthetic appeal and adequate cushioning and support. The midsole has an undulating shape substantially similar to a sine wave with a series alternating peaks and troughs, and may include one or more support elements disposed on the midsole to provide desired stiffness or cushioning properties to the midsole.

A shoe heel support device including a ground contacting base portion and a resilient shoe heel engagement portion attached to the ground contacting base portion, the resilient shoe heel engagement portion including at least three lobe portions each having an inner surface together defining a bore for receiving a shoe heel therein, the dimension of the bore smaller than the cross-sectional dimension of the shoe heel.

Systems and methods of measuring feet and designing and creating orthopedic inserts are described. The method can include measuring a pressure the foot exerts during a stride at a plurality of points over a period of time, and analyzing a pressure at the plurality of points over the period of time and designing the orthopedic inserter based on the analysis. The system can include a device that measures a pressure exerted by foot at a plurality of times at each of a plurality of points and a computer connected to the device, the computer having a memory that stores the measured pressures and a program operable to analyze the measured pressures to create a design of an orthopedic insert.

A traction-enhancing cleaning kit for allowing sports players to clean and dry the soles of their court shoes while in-play. The cleaning kit comprises a gellified shoe cleaning fluid (3), and a shoe-attachable cleaning and drying device (1) comprising a gel-absorbent cleaning/drying cartridge (2) removably secured by hook-and-loop to a carrier platform (4), which is in turn secured along the forefoot of the sneaker by its laces. The cartridge (2) includes an encapsulated viscose rayon microfiber panel (20) backed by a moisture-impermeable layer (30), and held captive in a plastic frame (10). The frame (10) includes a raised wiping lip (114) surrounding the panel (20). In use, the player need only swipe one foot over the top of the cleaning and drying device (1) attached to the other foot, brushing the sole. One swipe wets and squeegees dry, and the process is repeated for the other foot.

An article of footwear may include an upper and a sole structure fixedly attached to a bottom portion of the upper. The sole structure may include a sole component including a baseplate having a bottom surface and at least a first ground engaging member extending substantially downward from the bottom surface of the baseplate, the first ground engaging member having a substantially circular cross-sectional shape. In addition, the sole structure may also include a tapered support structure having a substantially pyramidal shape and extending substantially downward from the bottom surface of the baseplate, abutting the first ground engaging member at a side portion, and partially surrounding the first ground engaging member such that a portion of the first ground engaging member is exposed between edges of the tapered support structure. Also, the tapered support structure may extend downward from the baseplate less than the first ground engaging member.

An article of footwear includes a first ball control portion, a second ball control portion and a third ball control portion. Each ball control portion includes a group of gripping members configured to facilitate various types of ball control. Each group of gripping members is arranged so that the ball control portions present a series of approximately continuous edges to a ball, which can help maintain a smooth trajectory for a ball.

A cooling system for appliances, air conditioners, and other spaces includes a compressor, and a condenser that receives refrigerant from the compressor. The system also includes an evaporator that receives refrigerant from the condenser. Refrigerant received from the condenser flows through an upstream portion of the evaporator. A first portion of the refrigerant flows to the compressor without passing through a downstream portion of the evaporator, and a second portion of the refrigerant from the upstream portion of the condenser flows through the downstream portion of the evaporator after passing through the upstream portion of the evaporator. The second portion of the refrigerant flows to the compressor after passing through the downstream portion of the evaporator. The refrigeration system may be configured to cool an appliance such as a refrigerator and/or freezer, or it may be utilized in air conditioners for buildings, motor vehicles, or other such spaces.

A serial bus is provided with a device (sometimes herein referred to as an I2C serializer device) including circuitry and machine logic that operates as follows: when one of the master devices is using the bus for data communication, then the other master(s) will receive a wait signal until the bus becomes available again. This wait signal allows the master devices to wait as a “hardware response,” rather than requiring the master devices to be equipped with software and/or firmware to control the operation of waiting until the serial bus is available. In some embodiments, the use of the I2C serializer device allows a bus operating under a bus serialization protocol (for example, I2C) to be simultaneously connected to multiple master devices even in the case that one, or more, master device(s) do not include any currently conventional form of multi-master support.

A communication system with serial ports for automatically identifying device types and communication protocols and method thereof are described. The communication system and method are capable of automatically identifying the device types and communication protocols of interface devices with different serial device numbers which are disposed in the serial port architecture. Furthermore, the drivers are capable of performing a serial communication based on the serial port architecture for matching the device types and communication protocols correspondingly, thereby reducing the development and manufacturing costs of communication system. Moreover, the user of an application program module only needs to provide the device numbers and data control information without the cooperation of hardware circuits and manufacturing technique of the interface devices to complete the automatic control and monitoring tasks of the interface devices to increase the utilization convenience.

An apparatus is provided that includes a processor, a memory controller coupled to the processor to provide access to a system memory, and an interface controller to communicate with an endpoint device. The interface controller is coupled to the processor and configured to access a register of the endpoint device, the register to be mapped into a memory space of the system, the register to store a service latency tolerance value of the endpoint device. The endpoint device has a service latency tolerance value for a first state and a service latency tolerance value for a second state. The service latency tolerance value for the first state is greater than the service latency tolerance value for the second state.

A method of receiving a plug at a receptacle is disclosed. The method may include receiving a plug at a receptacle, the receptacle including contacts disposed with a rotational symmetry about a center point of the receptacle. The method may also include determining, via detection circuitry, any orientation of the plug inserted into the receptacle. The method may also include changing, via selection control circuitry, a connection path coupled to the contacts based on the orientation of the plug.

According to one embodiment, a first control module (CM) of a storage system receives a first request from a client device to read first data stored in a second storage location of a storage module, where the second storage location is associated with a second CM. The first CM includes a first processor and the second CM includes a second processor. The first CM transmits a first control signal the second CM via the inter-processor link to request the second CM to copy the first data from the second storage location to a first memory location associated with the first CM. The first CM initiates a first data transaction to transmit the first data from the first memory location to the client device through a communication fabric without having to go through the second CM.

A method for increasing compatibility of DisplayPort includes: providing a first source device, a second source device, a controller, and a sink device, wherein the first source device is connected to the controller; the first source device transmitting a first image signal to the sink device via a main link for displaying the first image signal on the sink device; causing the controller to disconnect from the first source device and connect to the second source device; executing a simulation process to generate a DC level variation on an auxiliary channel between the controller and the sink device; the second source device transmitting auxiliary data to the sink device; the sink device transmitting link data back to the second source device; and the second source device transmitting a second image signal to the sink device via a second main link for displaying the second image signal on the sink device.

The foldable Sportsman EZ grill is described. The Sportsman EZ portable grill has a grill member and a frame. The frame supports the Sportsman EZ grill on a support surface, keeping the front legs away from the fire/heat source, extending outwardly and in an arch from the frame. The support arms have a distal end and a proximal end. The distal end is joined to the support structure which connects to the grill member.

A solar boiler includes a boiler support defining an axis along an inboard-outboard direction. A hanger rod is rotatably mounted to the boiler support. A bracket is rotatably mounted to the hanger rod, and a solar boiler panel is mounted to the bracket. The solar boiler panel defines a longitudinal axis that is substantially perpendicular with the axis of the boiler support. The hanger rod connects between the boiler support and the bracket to support the weight of the solar boiler panel from the boiler support. The hanger rod and bracket are configured and adapted to maintain a substantially constant orientation of the bracket during inboard and outboard movement of the bracket relative to the boiler support.

A heat transport fluid passage device for a heat transport circuit has a wall defining a passage through which a heat transport fluid flows. The heat transport fluid contains a solvent made of water or an organic substance and fine particles dispersed in the solvent. A hydrophobic membrane is formed on a surface of the wall.

A silicon-based thermal energy transfer apparatus that aids dissipation of thermal energy from a heat-generating device, such as an edge-emitting laser diode, is provided. In one aspect, the apparatus comprises a silicon-based base portion having a first primary surface and a silicon-based support structure. The silicon-based support structure includes a mounting end and a distal end opposite the mounting end with the mounting end received by the base portion such that the support structure extends from the first primary surface of the base portion. The support structure includes a recess defined therein to receive the edge-emitting laser diode. The support structure further includes a slit connecting the distal end and the recess to expose at least a portion of a light-emitting edge of the edge-emitting laser diode when the edge-emitting laser diode is received in the support structure.

A carrying bag (10) with a shoulder-strap (22) and a zipper (14) with zipper-rider (16) for closing/opening the bag. The shoulder-strap (22) is provided with a loop (24) at one end and a key-operated locking device (26) at the other end thereof. Means (36) are provided for fastening the loop (24) to an inside wall of the bag. Means (48) are provided for securing the zipper-rider (16) by the locking device (26) to an outside wall of the bag (10) for preventing the un-zipping of the bag.

The portable purse strap hook is slidably and removably mounted on a purse strap. The portable purse strap hook includes a flexible sheet having at least one releasable fastener attached thereto for releasably fastening laterally opposed ends thereof to form a sleeve slidably disposed on the purse strap. A hook is pivotally secured to the inner surface of the flexible sheet. The hook is pivotal between a stored position within the sleeve and a position extending from the sleeve so that the hook may be used to hang the purse from a stationary support.

A system and method are provided for the shielding of outdoor electrical equipment from inclement weather, the system comprising: a plurality of support brackets affixed to the outdoor electrical equipment; a support frame disposed in the support brackets; a waterproof cover disposed over the frame; an apron depending from the cover, configured to cover electrical connections on a side of the outdoor electrical equipment.

An apparatus to support a device includes a first base; a first support; a first base-support hinge adapted to rotatably couple the first base and the first support along a first axis of rotation; a first swivel slidably connected to the first support and having a first cut-out adapted to receive a first portion of the device; a second base; a second support; a second base-support hinge adapted to rotatably couple the second base and the second support along a second axis of rotation; and a second swivel slidably connected to the second support and having a second cut-out adapted to receive a second portion of the device spaced apart from the first portion of the device.

A portable movie screen includes a screen portion and a frame portion surrounding at least part of the periphery of the screen portion. The screen portion has a screen gain greater than about 0.8 and an elasticity greater than an elasticity of the frame portion. The movie screen includes at least one side connected to the front portion and a receiving space defined at least in part by the front portion and the side portion. The receiving space is configured to selectively receive a support body including at least one sealed chamber and movable between a collapsed configuration and an expanded configuration. The frame portion is configured such that when the support body is in the expanded configuration and positioned in the receiving space, the frame portion tensions the screen portion and substantially maintains the screen portion in a desired shape.

A self-supporting sign of unitary construction comprises a middle portion having a first side, a second side, an upper side, and a lower side. A first foldable flap extends from the first side at a first distance beneath the upper side. A second foldable flap extends from the second side at a second distance beneath the upper side. A front foldable portion having a rounded perimeter extends from the lower side. In a use configuration, the middle portion forms an obtuse angle with respect to the front portion. A first slit is provided adjacent the first side and a second slit is provided adjacent the second side. The first and second slits are configured to aid in the respective folding of the first flap and the second flap with respect to the middle portion.

A painting implement cleaning and storage apparatus 10 is provided. The apparatus facilitates the cleaning and storage of painting implements such as a roller 12, a brush 14 and a roller pan 16. The apparatus includes a base 18 and a bracket 32 coupled to the base. The roller 12 is supported on the bracket 32 in an upwardly extending diagonal position between shields 45 and 54 for containing paint spreads from the roller. The brush 14 is supported on bracket 32 in a upwardly projecting position. A roller pan 16 is coupable to shield 45 and supported thereon in a descending position. Once the painting implements 12, 14 and 16 are supported on the apparatus 10, cleaning can be accomplished by the application of a stream of water thereto after which the implements can be left until they are needed.

A supporting and stabilizing shoe used with a masonry circular power saw. A shoe frame rigidly mounts to the saw's motor frame. A plate that is preferably substantially planar and bifurcated to form two substantially co-planar members with a gap therebetween pivotably mounts to the shoe frame. A spring biases the plate away from the blade, but can be overcome, and an adjustment knob tightens the plate in position relative to the blade. This provides for depth adjustment for the blade and keeps the blade at a desired angle, such as ninety degrees, to the workpiece surface. The plate extends longitudinally from the motor frame beneath the drive mechanism and the blade of the saw to provide a stable surface upon which the saw can rest during use or storage.

A saw apparatus for sawing paving slabs has a frame mounted on a ground contacting propulsion member such that the frame may move above a slab to be cut without touching the slab. A first saw support assembly disposes a blade of a saw in cutting engagement with the slab for a transverse cut. A second saw support assembly disposes a blade of another saw in cutting engagement with the slab for a longitudinal cut. The saws are mounted on the saw assemblies and the saw assemblies are mounted on the frame and the frame is mounted on the ground contact propulsion members such that no part of said frame need contact the slab during cutting.

An apparatus is disclosed for placement on a support surface between the support surface and a living being, wherein the living being has a bony prominence. The apparatus includes a first zone having a first coefficient of friction, the first zone being configured for positioning proximate the bony prominence. A second zone is adjacent the first zone, the second zone having a second coefficient of friction higher than the first coefficient of friction. The second zone is configured for positioning remote from the bony prominence. A method of preventing or healing decubitus ulcers includes positioning the bony prominence over the first zone and positioning an area remote from the bony prominence over the second zone.

An article of footwear including a knitted component having a monofilament knit element with peripheral knit portions is described. The knitted component includes a monofilament knit element formed by knitting with a monofilament strand. The monofilament knit element is formed of unitary knit construction with the remaining portions of the knitted component, including peripheral portions that are knit using a natural or synthetic twisted fiber yarn. An inlaid tensile element can extend through the knitted component, including portions of the monofilament knit element. The monofilament knit element may be knitted with a monofilament strand according to a variety of knit structures.

An article of footwear including a knitted component having a monofilament knit element with peripheral knit portions is described. The knitted component includes a monofilament knit element formed by knitting with a monofilament strand. The monofilament knit element is formed of unitary knit construction with the remaining portions of the knitted component, including peripheral portions that are knit using a natural or synthetic twisted fiber yarn. An inlaid tensile element can extend through the knitted component, including portions of the monofilament knit element. The monofilament knit element may be knitted with a monofilament strand according to a variety of knit structures.

A portable baking oven for a pizza or other food item includes a food item heating plate, a base having a heating chamber, and a top cover having a moisture vent and a heat reflector structure extending across the inside of said top cover. When placed on said base, the top cover forms a baking chamber above the heating plate. Heat produced in the base's heating chamber circulates up through air passageways in the base into the baking chamber above the food item heating plate. This circulated heat is reflected back down toward the food item heating plate by the top cover's heat reflecting structure to accelerate baking of the top of a food item placed on the heating plate. The top cover's moisture vent can be located above the heat reflector structure in the top cover, and openings can be provided in the heat reflector structure which allow moisture emitted by a food item being baked in the oven to pass through the reflector structure and out through the top cover moisture vent.

A preservation system for storage and logistic transport of nutritional substances. The preservation system obtains information about the nutritional substance to be preserved, senses and measures the external environment to the preservation system, senses and measures the internal environment to the preservation system, senses and measures the state of the nutritional substance, and stores such information throughout the period of preservation. Using this accumulated information, the preservation system can measure, or estimate, changes in nutritional content (usually degradation) during the period of preservation. Additionally, the preservation system can use this information to dynamically modify the preservation system to minimize detrimental changes to the nutritional content of the nutritional substance, and in some cases actually improve the nutritional substance attributes.

The invention comprises using a fabric cut into several pieces which are further assembled together by stitches, the stitches being made using a sewing machine comprising at least two needles (A', B') operating in-line one behind the other so that the sewing stitch of the second needle (B') is made on the threads of the sewing stitch made by the first needle (A') in order to cover the perforation made by the first needle and so that the perforation made by the second needle (B') is made through said thread (11), thereby filling said perforation with said thread (11).

A conveyance system that transports fabric comprises a work space having a surface that the fabric can be transports across, and at least one budger that moves and/or provide force to the fabric in a servo controlled motion.

A method of health management of a monitored system includes collecting component condition indicator data used to calculate a plurality of component health indicators. Component fault severity and potential failure modes are determined utilizing the component condition indicator data. The potential failure modes are ranked in order of likelihood to isolate the failure mode. A system of health management for monitored apparatus includes a fault severity module to derive a plurality of component health indicators from collected component condition indicator data, the plurality of component health indicators indicative of fault severity of a plurality of components. A fault isolation module separately derives a ranked listing of potential fault/failure modes utilizing the component condition indicator data. The system further includes a communication portion to which the plurality of component health indicators and the ranked listing of fault/failure modes are transmitted for review and/or action by cognizant personnel.

Luggage or carrying container (1) having an interface (10) for cooperating with one or more electronic and/or wireless devices (20, 22, 24, 26, 28), a rechargeable power source (30), an integrated antenna (40), and a wireless communication system (50). The luggage (1) allows a user to better manage various electronic devices/accessories in terms of space, efficiency and operation during travel.

A foldable chair, operable between a seating configuration and a rolling transport configuration, the foldable chair comprising a plurality of legs with a roller secured to the distal end of each leg and the proximal end of each leg secured to a column base. Extending from the column base is a column with a first and second end, the column first end secured to the column base and the second end of the column secured to a first platform or seat cushion. A second platform extends downwardly from the first platform for attaching a carrying case. Also included is a backrest rotatably secured to the first platform such that when the backrest is perpendicular to the first platform two roller elements are fully shrouded. When the backrest is rotated 90 degrees and disposed substantially parallel to the seat cushion the roller elements are exposed for rolling contact with the ground surface.

The sports bag with chair device provides a rigid front connected to a pliable rear, a top spaced apart from a bottom, and a pair of spaced apart sides, a top handle disposed within the top pliable rear, a pair of spaced apart wheels disposed on the rigid front bottom, the wheels extended forwardly from the front, an upper compartment disposed within the pliable rear top, a lower compartment disposed rearwardly and downwardly within the pliable rear, a closure selectively closing each compartment, a recess disposed about midway within the rigid front, a pivoted chair disposed within the recess, the pivoted chair selectively positioned within and without the recess, and a pair of spaced apart telescopic legs pivotally affixed forwardly and downwardly on the pivoted chair.

An apparatus for containing sports equipment includes: a wall defining an enclosure and a closeable opening in the enclosure, the wall being see-through at the closeable opening; and divider members configurable to an expanded configuration defining compartments within the enclosure and configurable to a substantially planar collapsed configuration, each compartment being dimensioned for receiving sports equipment, the divider members being removably insertable into the enclosure when in the expanded configuration and in the collapsed configuration. The sports equipment includes soccer balls or other types of balls, marker cones, a first aid kit, cooler for ice and pinnies. A lower section of the apparatus has a see-through front cover and a drain. An upper section may be watertight. The apparatus may include a rigid cylindrical compartment for containing marker cones. A kit may include the apparatus and sports equipment contained within the apparatus.

A sports equipment bag assembly having a removable bag enclosure for heating bats using sunlight. The removable bag enclosure has a transparent outer panel and a solar reflective inner panel. The reflective surface both insulates and reflects the solar light to heat the bats. The removable bag enclosure is removably fastened to a larger bag assembly by a fastener such as a zipper. The removable bag enclosure and the larger bag assembly have hooks that enable them to be hung upon a fence or similar structure. The sports equipment bag assembly further provides a shoulder strap to facilitate carrying.

A case for a portable electronic device such as cell phones, cameras, MP3 players and PDAs wherein said case includes material at the corners to provide protection to the electronic device. To reduce bulk at the corners and allow the material forming the case to conform with the contours of the device, the protection at the corners includes strips of material defining apertures there between. The apertures provide reduction in bulk and allow the case to conform to the corners of the device therein. Alternately, the protection at the corners can be provided by other structures co-molded into the corners of the cases. Such structures include material that is of a reduced thickness than other material used in the case, or structures that are formed to conform to the corners of the case. Such structures can be joined to the material forming the panels of the case by co-molding.

An apparatus that includes a suitcase and integrated support arrangements that are transformable from an extended state to provide support for a person to lie down and a stored state for ease of transport.

The present invention relates to an item of luggage (101) incorporating a collapsed resting support (125) which when erected may be used to support portions of a resting person (55) in a forwards leaning seated position. The item of luggage comprises an external casing (102) that extends across a plurality of sides of the item of luggage, and a personal resting support (125) for supporting a resting seated person's upper torso, the personal resting support being removeably affixable to a side (103) of the casing when not in use for resting support of a seated person. The resting support includes a main supporting section (126) for supporting a seated user's upper torso in a forwards leaning seated position, and at least two supporting legs (117, 118; 146) for supporting the main supporting section and which in use extend downwardly from the main supporting section. The item of luggage (101) comprises at least one ground engaging rolling means (109, 110) by which the item of luggage may be wheeled along the ground when being moved about and a handle (114) by which the item of luggage may be pulled to wheel the item of luggage along the ground. The handle (114) is joined to the casing (102) through one or more of the legs (117, 118) when the personal resting support (125) is affixed to the side (103) of the casing.

A portable suitcase tabletop system features a suitcase with a u-shaped telescopic handle located on a suitcase top surface. The telescopic handle slides out and away from the suitcase top surface when extended. The suitcase features a plurality of wheels located on a suitcase bottom surface. The system features a planar table pivotally located on a suitcase rear surface or a suitcase front surface. A U-shaped bar is slides out from the suitcase rear surface or the suitcase front surface next to a table bottom surface. The bar supports the table. The table and the bar are located in a zippered pouch. A telescopic front support slides out from a front support cavity located in the suitcase rear surface or the suitcase front surface close to the suitcase bottom surface.

A self-supporting, rigid, and collapsible reusable bag made from flexible material and having a bottom, two first sidewalls, two second sidewalls, a top opening, and rigid insert. A rigid full-wall board is embedded in each of the two first sidewalls. A rigid insert comprised of at least one pair of sidewalls and bottom with substantially similar dimensions to the second sidewalls and bottom of the bag are placed in the interior and in frictional contact with the second sidewalls and bottom of the bag. The rigid insert sidewalls are held in place with securing devices located on the interior upper corners of the sidewalls of the bag. The bag can be collapsed by moving the rigid insert away from the second sidewalls and bottom to allow the second sidewalls to fold either inward or outward. A full-wall pocket is provided for each first sidewall to receive the full-wall board.

A tool storage and transport system including a tool bag body formed from a base, a first exterior wall perpendicular to the base, and a second exterior wall perpendicular to the base and opposite the first exterior wall; and a tool organizer slidably engagable with at least one of the first and second exterior walls. The tool organizer includes an organizer tray having a bottom wall, a plurality of sidewalls generally perpendicular to the bottom wall, a first end, and a second end opposite the first end. The first end is slidably engagable with the exterior wall.

Luggage includes an upper panel portion which has a receptacle. The receptacle enables a user to insert a portion of a tablet computer into the receptacle and the receptacle retains the tablet computer at a convenient angle for operation.

A support structure for a load measurement sensor has sufficient durability without adding a large load to a portion transmitting a load to the load measurement sensor. In a support structure for a load measurement sensor, including a sensor body detecting a load generated from a seat having a seat frame and an extension shaft portion extending from the sensor body, by way of attachment brackets in the state where the extension shaft portion follows the horizontal direction, the support structure includes a load input portion which comes into contact with the sensor body and inputs a load to the sensor body, the sensor body includes a load receiving surface which contacts the load input portion and receives the load, and the load input portion is formed to be movable in the axial direction of the extension shaft portion with respect to the load receiving surface.

A kit for supporting a flexible material boat cover has a cover of flexible sheet material having a plurality of substantially parallel lateral channels formed on a bottom surface. A plurality of adjustable cross-straps are provided equal in number to the plurality of lateral channels. Each cross-strap has a pocket that is formed at each end thereof. A plurality of resilient cross-poles are provided equal in number to the plurality of lateral channels and each having a length greater than the cross-strap.

A laundry transport apparatus and method includes a container defining an interior area configured to accommodate a plurality of laundry carts, the container having a door movable between closed and open configurations to selectively allow access to said interior area. The apparatus includes a ventilation network to pass air to and from the interior area, the ventilation network including a pathogen identification and containment apparatus to detect, isolate and treat potentially harmful material within the soiled laundry. At least a portion of intake and outlet ducts are immediately adjacent one another to influence temperature of air passing through each duct, warmer air passing through one of the intake duct or the outlet duct becoming cooler and cooler air passing through another of the intake duct or the outlet duct becoming warmer.

A portable paddleboard exercise apparatus having a balance platform, an elongated member, a paddle handle, and a number of resistance bands. The apparatus may further include a frame with one or more support members configured to support the balance platform. The balance platform includes an upper surface for a user to balance thereon. The elongated member extends from the balance platform. The resistance bands extend from a distal end of the elongated member to the paddle handle. A user may balance on the balance platform in one of a number of positions while pulling the paddle handle against a resistive force generated by the resistance bands.