The Schwalbe hose – Air Plus extremely stable in air pressure. The rubber compound makes it possible: less air loss and pump less often. Extremely reliable! Quality control for safe driving pleasure: each Schwalbe tube is checked twice for air retention in the factory. - Air Plus thanks to the high proportion of pure butyl rubber, the Schwalbe Air Plus hose keeps the air much longer. Thus, less needs to be pumped. Thanks to its around 70% higher wall thickness, the Schwalbe Air Plus is particularly robust - and therefore well protected against punctures and punctures.