The Carex Semi Roll Pillow is ergonomically designed to provide ideal spinal alignment and a therapeutic sleep posture to reduce head, neck, shoulder and back discomfort * used under the back, knees or ankles * high quality memory foam in the Carex Semi Roll Pillow reacts fast to provide instant relief and comfort, and provides slow memory foam recovery for longer support * removable soft polyester and rayon cover zips off easily for machine washing * Hypo-allergenic * Item Number: P107-00 * Specifications: 8"H x 20"W x 4"D * Keywords: memory foam, lumbar support, relief from lower back pain, relief and comfort cushion, promote good posture, ergonomically designed, soft polyester cover, sleeping or sitting cushion, improved circulation, decreased pressure and strain, provide spinal alignment, reduce lower back, leg, hip, ankle, neck or joint pain