Contoured design and hook-and-loop closure provide support and act as a gentle reminder to limit motion. One-inch thick polyfoam covered with a cotton stockinette. 24" total length, medium support. Natural color. Available also in 2.5" (item #6219, 3" (item #6220) and 3.5" (item #6221). To determine correct height, measure from bottom of chin to the top of sternum.