Box One Race saddles are the first of their kind, featuring a proprietary co-molded nylon shell and carbon fiber seatpostSuper lightweight and designed specifically for BMX racing, they feature the Box logo molded into the top and have reduced profiles to prevent snagging on pants135mm seat post available in 22.2mm and 27.2mm widths22.2mmNylon/CarbonBlack165mm x 108mm164gUnisexUPC/EAN/GTIN: 616043830544