The Impact Gel Mile Buster brings our revolutionary gel technology to your motorcycle seat. Our patented formula provides exceptional comfort for long rides by absorbing shock and distributing weight. Mile Busters are available with fleece covering, felt cover, or also available in raw gel form for personal customization. Small: Length = 10 1/4"; Width = 6" Medium: h = 14 1/2"; Width at widest = 12"; Width at narrowest = 6 1/2" Large: Length = 13 1/2"; Width = 14 1/2" Extra Large: Length = 20"; Width at widest = 21"; Width at narrowest = 15"