The Carex® Knee Pillow is ergonomically designed to provide ideal spinal alignment to help reduce lower back, leg, hip, ankle or joint pain. Sleeping or sitting can be difficult for those with back, leg, hip or joint pain. A knee pillow when placed between the legs keeps your legs, hips and spine parallel and aligned. This results in improved circulation and decreased pressure and strain on those areas. The high quality memory foam in the Carex® Knee Pillow reacts fast to provide instant relief and comfort, and provides slow memory foam recovery for longer support. The removable soft polyester and rayon cover zips off easily for machine washing.  Hypo-allergenic