Selle Italia SLR Boost 3D Superflow Saddle. Features: Made with a proprietary, 3D printed pattern Provides support on the toughest road rides helping you conquer the steepest of climbs and fastest descents The differentiated cushioning zones give progressive absorption This high-tech road-specific saddle is one of the most advanced on the market L3: "Wide" intertrochanteric distance and high pelvic rotation (Flow and SuperFlow saddles) S3: "Narrow" intertrochanteric distance and high pelvic rotation (Flow and SuperFlow saddles) Specs: Model:SLR Boost 3D Superflow Idmatch:S3 Rails:Carbon Top:3D Printed Color:White Limited Edition Lx W Mm:248x130 Weight:166g