Schwalbe Air Plus SV 40mm Tube 17-AP (28") 28 × 1.45–1.85

Schwalbe AIR PLUS bicycle inner tube no. 17-AP. For bicycle tires in the size 28" inch (ETRTO 37→47-622, 40-635). Holds the air even longer thanks to wall thickness even longer. Less frequent re-inflation necessary. Also protects above-average protection against punctures.