The Carex Memory Foam Semi Roll Cushion has an ergonomic design to reduce head neck shoulder and back pain. This versatile cushion can be used behind the neck as a traditional pillow or as a travel pillow or under the knees back or ankles to provide additional support as a bolster pillow. The semi roll can even be used as a lumbar cushion and relieve lower back pain. Made from premium high-quality memory foam that immediately reacts to provide pressure relief our semi roll cushion meets multiple needs. Our attractive navy blue cover is hypoallergenic and made of soft polyester and rayon. The removable cover is machine washable so you can easily keep the cushion clean between uses.