The extremely lightweight S-Works Power saddle has a stiff FACT carbon shell & rails & is a high-performance saddle thats designed to help you perform at your best. Its Body Geometry design with our lightest level of padding caters to both men & women & helps deliver superior performance in all seating positions. Proven through blood flow testing & pressure mapping the extra wide & elongated Body Geometry channel & proper sit bone support provides all day comfort. Patented Body Geometry design is lab-tested for both men & women to assure blood flow to sensitive arteries. Stiff FACT carbon fibre shell is tuned for support & ride compliance. Super-light PU padding for comfort & support on longer rides. Ultra-light strong & oversized FACT carbon rails. Tough lightweight & water-resistant cover. Level 1 padding: Lightest level of padding for the most direct connection to the bike. SWAT™-compatible mounts moulded into the saddle base allow for sleek & integrated storage solutions. Size 143mm / Weight 159g Size 155mm / Weight 161g NOTE: Oversized 7x 9mm carbon rails are not compatible with seatposts equipped with side-load clamp mechanisms for 7mm round rails.