These Fleece Wheelchair Cushion Cases are available in a range of sizes, and are covered with real Lamb’s wool the high-density 1” deep pile distributes pressure more evenly giving immediate comfort and relief. The Wheelchair Cushion Cases are pre-treated to enable the real Lambs wool to be hot washable up to 161°F (71°C) and autoclaved. The Wheelchair Cushion Cases can be washed at these temperatures up to 50 times and still continue to give softness and comfort to patients.