Ergonomic road and gravel saddle designed to effortlessly follow pelvic movements, reducing pressure on sit bones Rearward positioned and anatomically adapted pressure relief channel prevents discomfort and numbness Nylon composite shell with orthopedic comfort foam Recommended sizing for sit bone width: S/M 9-12cm, M/L 12-16cm TECH SPECS model SR Allroad Comp size S/M rails TiNox SL top microfiber color black LxW (mm) 249x143 weight 240g