Pirelli, Cinturato SmarTUBE X, Tube, Presta, Length: 42mm, 700C, 28-40C

* 70% weight savings compared to conventional tubes* 50% smaller than conventional tubes* 3x thicker than standard SmarTUBES* Not for use with rim brakes* Not designed to be repaired* Constructed of Thermoplastic Polyurethane* Weighs just 150 grams