Schwalbe Air Plus Presta Tube SV21AP - 27.5 x 1.5-2.4 - 305 g

The Schwalbe SV21AP (Air Plus) is a high-durability inner tube specifically designed for 27.5" (650B) wheels. Engineered for riders who value puncture protection and low maintenance above all else, the Air Plus series features a significantly higher content of pure butyl rubber and a wall thickness that is 70% greater than a standard tube.

At 305 grams, it is the ideal choice for heavy-duty applications such as E-MTBs, cargo bikes, and long-distance touring. The increased density of the rubber means this tube retains air pressure significantly longer than conventional tubes, drastically reducing the frequency of re-inflation.