The Bluestone Adjustable Leg Wedge Support Cushion features a contoured memory foam layer so you can sleep comfortably on your back. The unique design eases pressure on your back to improve circulation and relieve lower back and leg pain. Includes two removable wedge inserts that allow you to raise or lower the height to find the support that is right for you. A zippered white terry fabric cover is easily removable and machine washable. Zippered Machine Washable White Terry Fabric Cover Cover Material: 65% Poly 35% Cotton 220 gsm Terry Fabric Cover Filling: 1 40D Memory Foam and 8.5 20D Regular Foam with Two Wedge Inserts Cushion Dimensions: 24 inches (L) x 16.5 inches (W) x 9 inches (H) Wedge Insert Dimensions: 5.25 inches (L) x 16.5 inches (W) x 2.25 inches (H)