The Schwalbe hose – Air Plus extremely air pressure stable. The rubber compound makes it possible: less air loss and less frequent pumping. Extremely reliable! Quality control for safe driving fun: each Schwalbe hose is double checked in the factory for air retention. - Air Plus thanks to the high percentage of pure butyl rubber, the Schwalbe Air Plus hose keeps the air much longer. This means less need to be pumped. Thanks to its approximately 70% higher wall thickness, the Schwalbe Air Plus is particularly robust - and thus well protected against punctures and punctures.