Continental Gatorskin Tires feature puncture resistant casing and wear optimized tread. FEATURES: Highly puncture-resistant casing with Duraskin sidewall protection High mileage carbon-black tread compound Continental has changed the name of the Ultra Gatorskin to Gatorskin. No changes have been made to the tires other than the label SPECS: Flat Protection: Tread and Sidewall TPI: 330 PSI: 120 Tire Intended Use: Road Tire Type: Clincher Tire Bead: Wire