Continental's new range of inner tubes makes it easy to find the one that's right for you. The user-friendly offer corresponds to multiple sizes, valve types, lengths and designs, as well as different tire types and riding styles. The variety of tubes allows you to make the right choice: the standard tube is available in all sizes, offering the best compromise between daily riding and weight, while the Light and Supersonic versions are most concerned with weight and rolling resistance.

Specifications:

The tube fits wheels with tire sizes in the 28" - 29" x 1.75" range - 2.5" (47/62-622).
In the above range, the diameter of the wheels to which the inner tube fits is given, that is, 28/29" (ETRTO 622) and the width of the tires with which it is compatible :from 1.75" to 2.5" (ETRTO 47-62).

Examples of tire sizes to which it can be used:

29" x 1.75" (47-622)
29" x 1.9" (48-622)
29" x 2.0" (50-622)
29" x 2.1" (54-622)
29" x 2.2" (55-622)
29" x 2.3" (57-622)
29" x 2.4" (60-622)
29" x 2.5" (62-622)

Vent: presta with a length of 40 mm. The valves used by Continental have a specially profiled nut that stabilizes the valve in the rim. The profiling of the nut also makes it possible to install the valve in rims having a hole with a diameter of 8 mm (dedicated to car and dunlop valves). Presta valves are pumped using exactly the same pumps as dunlop (bicycle) valves.

About the Unitube system in Continental inner tubes:
Multi-size tubes fit more tire sizes than traditional bicycle tubes.
All tubes are seamless and vulcanized to ensure uniform roundness and increased reliability of the valve stem.
Each unit goes through a very rigorous quality control.