Enjoy maximum comfort while you lie on your side when you use this contour memory foam leg pillow to support your knees. The innovative design of this memory foam leg pillow molds to your personal leg contours in order to alleviate pressure on your knees, hips and back. Your body heat and pressure cause the memory foam core to respond and mold around your shape. It returns to the original shape when not in use. This foam leg pillow comes complete with a removable and machine-washable case. The foam used to craft the knee cushion features a firm density while maintaining a light weight.