Roho Contour Select Cushion 20 W x 18 D Dynamometers Accessories Free Sale Certificate(FSC) Power supply 14283 Free Sale Certificate(FSC) Power supply ≤3mA Battery A10 Working Time 80 hours Battery type zinc empty battery Warranty 1 Year About the size of a dime 20 X 18 * The contoured design combined with the simple operation of the ISOFLO© Memory Control unit offers provides a new level of postural control and stability that has never been achieved in an air cushion * The contoured design positions the pelvis back in the wheelchair and centers the individual comfortably in the middle of cushion * The ISOFLO Memory Control unit locks air into each of the four compartments providing stability by minimizing side to side and front to back motion * Adjustable to individual s position over time * Lightweight & easy to handle and carry * Cushion can be easily cleaned with soap and water * Cover is machine washable * Flame resistant black neoprene (not made with natural rubber latex) support pad can be patched to extend use * Separated air cells allow air circulation to reach the surface of the skin *