XcelTrax Air Wlkr Lge Low Boot M 10.5 12.5 W 11.5 13.5 Jobst Relief 20 30 Knee Hi * Included wireless telemetric heart 18747 * Included wireless telemetric heart rate chest strap will help you stay within your target heart rate zone for an efficient workout 12 W x 34'L x 7 H * A bed positioning wedge contoured to an optimum 30¯ * Provides optimal 30 degree angle of incline for relieving pressure on hipbone and coccyx * Wedge is comfortable and made from convoluted foam * Low Shear II wipe clean outer cover reduces skin damaging friction * Can be disinfected for infection control * Non slip bottom keeps wedge securely in place * Super Soft Convoluted foam surface * Designed for ideal support and comfort following trauma or post operative procedure * The lightweight design and unique pre shaped ergonomic frame help to modify the level of pressure on the injury at both the malleoli and lower leg * The soft nylon foam liner has an integrated pump design making the pneumatic liner simple to inflate and adjust *