Schwalbe Tube AV7 20 x 1.50-2.50 Schrader 40mm 145g

A tube isn't just a tube. Schwalbe tubes stand out with exceptional airtightness. Thanks to the high - quality and pure rubber mixture, they retain air pressure much longer. Each tube is individually inflated and molded, ensuring even wall thickness and great air retention. Reliability is a key feature. Through consistent quality control, every tube is inflated at the factory and stored under pressure for 24 hours to test air retention. Our Group Tube System uses high - elasticity and quality materials, covering a wide range of tire sizes. For instance, tube no.17 fits section widths from 28 mm to 47 mm. It's the only tube marked'very good' by the Swiss consumer magazine 'Kassensturz' in a 2012 test of 12 tubes. In comparative tests, Schwalbe tubes retained pressure better than others (including well - known brands and no - name products). Over 30 days, other tubes lost nearly twice as much pressure. Schwalbe maintains high standards despite rising butyl prices. All tests were done on the same rim with a 28” x 1.75” (47 - 622) tire, starting at 5 bar pressure.

Using your Schwalbe tube is easy. First, make sure your tire and rim are clean and free of any sharp objects. Carefully insert the tube into the tire, then mount the tire on the rim. Inflate the tube to the recommended pressure for your tire size. When inflating, be gentle to avoid pinching the tube. As for maintenance, check the air pressure regularly to ensure optimal performance. If you notice a slow loss of pressure, check for any punctures or damage. Store your tube in a cool, dry place away from direct sunlight and chemicals. This will help keep the tube in good condition and extend its lifespan.