The SporTUBE is the most classic cycling inner butyl tube range, the standard interpretation of the most used air retention system in the world.
A complete range with the size and specification for every kind of cyclist and discipline, from road cycling to urban commuting.
| MODEL | SIZE | WEIGHT | VALVE TYPE | VALVE COLOUR | MATERIAL | COMPATIBILITY |
| SporTUBE | 700 x 32/40C | 150g | Presta, 48mm | Silver | Buty1 | Disc and rim brakes |
