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 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 * 10 1/2"L x 8"W x 7 3/4"H *