Features:Lightweight:- 2/3 lighter than a standard tube Every gram counts, when it is up to cycling fun. Even more if you reduce the rotational weight.- Tubolito offers an easy and achievable weight tuning.Tough:- 2 times stronger than standard tubes Lighter and more robust. We make the impossible possible.Developed and manufactured in Europe:- The tubolito inner tube is manufactured in Europe, and all assembly parts are sourced in Europe. This has some major advantages. We can maintain very high quality standards. We can realize fast innovations by having a short feedback loop between development and production site. We can maintain sustainability trough to short transport routes.S-Tubo CX-Gravel:- developed to fit in any small pocket, 35 grams lightweight S-Tubo-CX/Gravel All due to its very small packed size is the ideal spare tube for all 700c and 650B tires from 32 mm-50 mm width. However, it is not only a savior in need but can be perfectly used on a daily basis as it still is as robust as standard rubber tubes. Also leftovers of tubeless liquids do not do any harm to it. Given its low rolling resistance it can also become the decisive advantage at competitions. Available with 42 mm (35 grams) and 60 mm (36 grams) Presta valves and suitable for disc brakes.Specifications:- Diameter: 700C- Weight: +- 36 g- Tyre width: 32-50 mm- Valve: Presta 60 mm