The Carex? Lumbar Support Cushion is ergonomically designed to provide excellent support to help relieve lower back pain and promote good posture. The Carex? Lumbar Support Cushion is highly versatile and can be used at home, at work or when traveling. The high quality memory foam in the Carex? lumbar support cushion reacts fast to provide instant relief and comfort, and provides slow memory foam recovery for longer support. The Hypo-allergenic removable soft polyester and rayon cover zips off easily for machine washing.