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