The Schwalbe AV19 inner tube retains air significantly longer thanks to the pure rubber compound. In addition, Schwalbe can guarantee an even more uniform wall thickness with low weight thanks to vulcanization in a mould. Thanks to its high elasticity and top quality, this inner tube covers several tire sizes. The inner tube with Schrader valve covers tire sizes from 27.7 to 29 inches. Only an extremely high-quality and reliable inner tube like this one from Schwalbe can cope with such demands.