Schwalbe AV Tube 17 (28") 28 × 1.10–1.85

Schwalbe standard bicycle inner tube no. 17. For bicycle tires in size 28" inch (ETRTO 40-609, 28→47-622, 32-630, 40-635). Holds air for an above-average length of time. Thanks to the best material quality and uniform wall thickness. Maximum reliability that has proven itself millions of times over.