The Selle Italia SLR 3D Boost Saddle is designed to keep you moving fast on the road without losing comfort. The cover is 3D printed, consisting of different cushioning zones to provide progressive comfort throughout the different areas of the saddle. A Superflow cutout is large and pronounced to save weight and avoid pressure on sensitive areas. Titanium rails help boost durability by about 25 percent while also having about 15 percent lower weight than standard rails. With the Selle Italia SLR 3D Boost SF Saddle, you can count on comfort and performance with every pedal stroke.