Ergon SF Women's Saddle. Features: Ergonomic comfort saddle for fitness and commuter bikes Optimally tuned for an athletic riding position Forward positioned and anatomically adapted pressure relief channel prevents discomfort and numbness SF Sport Gel: Nylon composite shell with orthopedic comfort foam padding and gel inserts for optimum pressure relief SF: Nylon composite shell with orthopedic comfort foam padding Specs: Model:SF Sport Gel Rails:CrMo Top:microfiber Color:black Size:M/L Weight:355g