Designed for people who are at lower risk for pressure sores, the ventilated, two-layer, Stimulite Silver cushion can be used in a wheelchair, on a recliner or stadium seat and provides exceptional comfort, stability and support. At 1-1/2-inches thick and weighing only 1 pound, you can take this cushion wherever you go.?? Total Pressure Management®? Designed For Elder Care 1-1/2" thick 1 lb. machine washable; dryer safe standard sizes: 16" x 16", 16" x 18", 18" x 16", 18" x 18" flat bottom only available with polyester or sheepskin cover