Gel Wheelchair Cushion by Vive Dynamic Fluid Core Liquid gel in the core allows for unrivaled pressure distribution across your bottom. Standard foam cushions simply provide a thin layer of padding while you are sitting. In this cushion, the internal fluid allows pressure to be moved from sensitive, high pressure regions like the coccyx and tailbone to regions with less pressure. 4 Layers of Supportive Comfort Layer 1 - Soft, luxurious water resistant cover Layer 2 - 100% waterproof seal over foam Layer 3 - Comfortable, supportive foam that will not flatten under your weight Layer 4 - Dynamic gel core Designed For: - Wheelchair, office chair, sitting chair, stadium bleachers, automobile and more - Pressure redistribution for pressure sores & ulcers - Coccyx, Tailbone, Back, Sciatica Pain & More - Heavy duty use and portability Easy Cleaning Removable cover allows for easy machine washable cleaning. Simply remove the cover with the premium, durable zipper. The cover will last for hundreds of washing cycles. Comfort & Relief Designed with medical grade use forms the cushion also is perfect for anyone who sits long hours at any workstation. With an idea balance of supportive foam and contouring gel this versatile cushion will make sitting comfortable again. 60 Day Guarantee Backed by a Vive Health 60 day unconditional guarantee. Order now with confidence.