The beginning of it all. The rst SMP4BIKE revolution model, still astonishingly up to date! For which cyclist Gender: Unisex Sit bones width: from 12,6 to 15,0 cm Pants size: L, XL, XXL Use: MTB, Road, Gravel / Cyclocross, Commuter / Fixed Type of bicycle: Traditional, E-Bike Padding level: Intermediate Materials Padding: Foamed elastomer Cover: Microfiber Body: Carbon reinforced nylon 12 AISI 304 rail: AISI 304 stainless steel tube Ø 7.1 mm Dimensions and weight Width: 148 mm - Length: 278 mm With AISI 304 rail: 350 g