High Sierra’s Lumbar Cushion is shaped with contours that align with the lower back arch for maximum lumbar support. The contours help the cushion properly function equally well on lengthy, seated trips in tight spaces over harsh terrain or more leisurely stationary situations such as home or office work. This cushion consists of high-grade memory foam and an ultra-soft removable plush cover. The foam responds to and remembers the unique curvature of a person’s body and the forces the body applies. The plush cover adds even more comfort to the already immense support system that the memory foam offers, and this removable layer makes for easy cleaning without putting the foam in contact with moisture. An adjustable strap is included with this universal lumbar cushion so that the cushion doesn’t slide out of place over time. With this strap securing the cushion to your seat, your comfort can last hour. Plus, the strap and cushion are designed to fit any seat, so this cushion comes in handy in pretty much any situation you can imagine.