The Bariatric Skin Protection Cushions provides pressure distribution and weight equalization to meet unique demands of the bariatric patient. Cushion Features 4" (10.2 cm) cushion Medium density foam base Non-aqueous specialized viscoelastic gel core layer reduces tissue interface pressure at critical points Proprietary gel is a flexible solid that will not leak Gel is placed at three pressure zones Visco-elastic memory foam topper for superior comfort and pressure relief Positions the user with a moderate slope from front to back Dimensions: 22 X 18 X 4" Cover Features Fluid-resistant stretch top cover, reduces shear and friction Antimicrobial Flame retardant Removable and washable Non-skid base Strap to secure cushion firmly to the chair