The Schwalbe Marathon Supreme is the ultimate do everything touring tire. The new Supreme model features several characteristics that keep your bike rolling mile after mile. First, HDV (High-Density Vectran) woven fibers in the tire casing provide the user with extremely high puncture protection, paramount for long tours.Schwalbe is a market leader in bicycle tire design and manufacture. Innovative designs and market specialization make their tires stand out both in quality and performance.