The Rifton HTS Headrest can be used on all sizes of the Rifton HTS. It has a contoured surface to help hold the user's head in place. It has 2 planes of adjustment: height (from maximum growth) & anterior/posterior (forward and back). The headrest provides support behind the head for all users when it is tilted back in the shower. The blue pad is made from a polyurethane integral skin foam that is waterproof and can be cleaned easily.