Cinturato SmarTUBE is the cycling inner tube designed for gravel, adventure and endurance. The tube provides all the benefits of the innovative TPU (Thermoplastic Polyurethane) and thanks to a specific formulation delivers the best performances for those who are looking for superior puncture resistance with low weight and compact size. Size: 700x33/45c  60mm Valve Length Weight: 49 g Valve Type: Presta Material: TPU Compatible: Disc and rim brakes