Light enough for racing and durable enough for training, the Continental Sprinter Tubular Road Bike Tire features four layers of polyamide casing to protect against punctures. The German-made Sprinter Tire gives you a smooth ride, offers high mileage, and features natural rubber and activated silica compound (ASC). Continental's ASC enhances the tire rubber's grip on both wet and dry roads, which improves cornering safety and reduces rolling resistance. Inflation on this three-ply tire is 115 to 170 psi.