Grand Sport Race's honorable tire using the Breaker thread defect protection. Thanks to the PureGrip compound, it offers great grip and comfort.Size: 700x25C (25-622) / 700x28C (28-622) Heel: Kevlar - foldable Mix: Pure Grip Protection: rivet breaker TPI: 3/180 Recommended pressure: 65-120 PSI Weight: 700x25C - 270 g / 700x28C - 330 g SL version