Patented Body Geometry design is lab-tested for both men and women to assure blood flow to sensitive arteries. Stiff FACT carbon fiber shell is tuned for support and ride compliance. Super-light PU padding for comfort and support on longer rides. Ultra-light, strong, and oversized FACT carbon rails. Tough, lightweight, and water-resistant cover. Level 1 padding: Lightest level of padding for the most direct connection to the bike. SWAT™-compatible mounts molded into the saddle base allow for sleek and integrated storage solutions. Size 143mm / Weight 159g. Size 155mm / Weight 161g. NOTE: Oversized 7x9mm carbon rails are not compatible with seatposts equipped with side-load clamp mechanisms for 7mm round rails.