The Tubolito Tubo CX/Gravel Inner Tube is a great all-rounder that is extremely light and provides exceptional puncture resistance; twice that of a butyl tube.64% lighter up to 96g weight saving per wheel50% smaller packed size2x more robust at puncture testSuitable for disc and rim brakesWeight: 54g (42mm), 55g (60mm)Colour choice is for the valve colourTubolito's Tubo CX/Gravel Inner Tube with Presta valve is suited to 30-50mm wide tyres, and boasts a massive 64% weight saving over standard butyl tubes and as a result it has a 50% smaller packed size so it takes up much less space in your saddle bag/jersey pocket. Not only are Tubolito tubes lighter than standard tubes but they are much tougher as they are manufactured with a thermoplastic Polyurethane elastomer, called PU. This group of materials is known for its durability and excellent damping abilities. If you do get a puncture with the Tubolito it ll be quick and easy to repair using the Tubo Flix Kit (sold separately).