Brooks C13 Saddle- Carbon, BlackC13 utilizes the same vulcanized natural rubber and organic cotton top of the Cambium line yet weighs less than the popular C15 model. Cambium A new generation of saddles that offers a natural feel and flexibility unlike any foam or gel saddle on the market Length 275 Rail Material Carbon Saddle Cut Out No, Yes Material Rubberized Clamp Style 7x9 Carbon Rails Gender Age Unisex Color Black Width 145, 158 Defined Color Black Weight 280, 295, 310