Membrane : 100.0% Rubber - Synthetic
Our inner tubes are tested continually by our professional teams, such as the U-19 PRO Racing Team and the MTB Racing Team.
To guarantee optimal quality, 100% of our inner tubes are inflated for a period of 8 hours.
Carry your inner tubes in a container that protects them from perforations (B'TWIN carry case, original packaging, etc.).