The Dual Compartment Cushion interconnected air cells allow you to be immersed for maximum pressure redistribution while decreasing friction and shear. Dual compartments can be adjusted independently to increase positioning and stability for either side-to-side or front-to-back control. Key benefits: —Easy to set up —Dual compartments for positioning —High Profile (4.25”) —20″x18″x4.25″ —Model #2R1110C —Includes Pump, Cover & Repair Kit.