Selle Italia's lightest short saddle ''Boost'' short nose improves thigh clearance, saddle fit and reduces weight No cut-out, improves support for cyclists who have a limited pelvic rotation Carbon infused shell ensures low weight and durability Fibra-Tek cover, made from a strong, highly durable and lightweight technical microfiber material CarboKeramic rails, made from ceramic-coated carbon, offer low weight and superior clamping resistance Weight: S: 132g, L: 139g