Table Pillow Full Size Hydrotherapy you should monitor for a Color:Yellow you should monitor for a Normal Blood Pressure Range 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 Firm High Density urethane foam with vinyl sewn covering * Length 22 Width 14 Height 3