Continental Grand Prix Classic Road Bike Clincher Tire CLASSIC MODEL- The tread profile is from 1982 and features brown sidewalls, but dont let that fool you, the components are all Continentals latest designs, like the PolyX Breaker. BLACK CHILI- Features Continentals revolutionary Black Chili Compound which reduces rolling resistance by 26% improves grip by 30% and adds 5% more mileage out of your tire. POLYXBREAKER- The polyester fibers overlap during manufacturing, yielding a very dense fabric and minimal space in-between threads, making the PolyX highly resistant to any foreign body without reducing the rolling resistance. HANDMADE IN GERMANY-Continental has been hand making their tires since 1871, maintaining the integrity of tradition, while evolving with the most advanced technology. CONTINUOUS 3PLY CARCASS- Features a 180 tpi nylon carcass on which the BlackChili and PolyX Breaker are built.