Continental Grand Prix 4 Season Road Bike Clincher Tire - Folding HANDMADE IN GERMANY-Continental has been hand making their tires since 1871, maintaining the integrity of tradition, while evolving with the most advanced technology. VECTRAN PROTECTION- Reinforcing and matrix fibers made of Vectran are 5X as strong as steel yet still extremely lightweight and abrasion resistant, protecting your tire from punctures more effectively than two layers of Nylon. DURASKIN- Sidewall protection coming from the high quality polyamide fabric encasing the core casing of the tire from scuffs and cuts under the worst conditions. ALL SEASON TIRE- The Grand Prix 4 Season can handle any weather conditions you throw at it, keeping you rolling year round. TOP WINTER TIRE-Recognized as the top winter tire by Road Bike Magazine.