Kantek Memory Foam Backrest - Black - High Density Memory Foam (KTKLS360) EachBackrest features high density, memory foam for comfortable support that conforms to your body. Ergonomic design supports your spine and lower lumbar region to relieve back pain and tension. Plus, it helps you maintain a healthy posture. Adjustable strap secures the backrest to the chair to keep it securely positioned. Washable fabric cover can be removed for easy cleanings. General Information Manufacturer: Kantek, Inc Manufacturer Part Number: LS360