The Velo Pronto Saddle features double density patented saddle construction that combines a lightweight resin with Krayton rubber inserts that flex to relieve pressure.D2 (Double Density)-patented saddle construction combines a lightweight resin with Krayton rubber inserts that flex to relieve pressureWebspring-Nine independent coil springs with thick padding strategically spaced for comfort and support in recreational ridingO-Zone Center Cut-a simple cut out to relieve pressureCrN/Ti Alloy rails-special metal combination with weight similar to titanium, but with a more affordable priceItem SpecificationsColorBlack/GrayWeight360gWidth130mmLength270mmGenderMen"sRailCroMolyClamp StyleStd RailsDefined ColorBlack