Cinturato SmarTUBE X

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 Attributes Valve Length 60mm Shaft Type Non-threaded Valve Presta Wheel Diameter 700C