VidaShield™ UV24 Air Purification System, 1 Each Jobst Wash Kits Solutions 20 X 18 * The 16 7136 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 TFX™ dispenser refill 24 7 air purifying operation Reduces level of bacteria and fungi on surfaces