Apex™ Gel Foam Cushion, 20 x 16 x 3 Inch, 1 Each Utensil Hand Aids 20 X 18 * The Two 1 inch urethane 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 or 32° C to 43 Breathable stretch removable cover: High performance pressure reducing fabric promotes healing via active evaporation of moisture and cooling at patient pressure points For those at risk for pressure ulcers