Racers' dreams come trueThis super light "Rocket" answers almost every demand at one time: Incredible grip with extremely low weight and fully loaded with all the latest technology - 127-Evo-carcass, PaceStar Triple Compound, U-Blocks forming an open tread that has exceptional self-cleaning properties. Countdown begins!Out and out competition tire! Puncture protection and durability are limited. PaceStar Compound. Lite sidewalls.TL Ready.650b x 2.1 (460g), 650b x 2.2 (490g) and new 650b x 2.8 (785g) or 650b x 3.0 (830g)