SCHWALBE 40 mm inner tube Transparent, 700

A tube is not just a tube. Airtightness. Schwalbe tubes retain air pressure considerably longer. The quality and the material purity of the rubber mixture directly effects the quality of the tube. Each Schwalbe tube is individually inflated and inserted into a mold. This ensures the even wall thickness and excellent air retention. Reliability. Consistent quality control brings with it the security of use: Each tube is inflated at the factory and stored under pressure for 24 hours in order to test the air retention. Group Tube System. The high elasticity and quality material used in our tubes allows a great many tire sizes to be covered. True reliability. Reduced weight that has been proven for many years.