The Vittoria Air-Liner is a technical foam-based puncture protection for tubeless use. Protection for the rim and puncture protection at low air pressures. The Air-Liner was developed in collaboration with Deaneasy. In Italy it is milled from a piece of technical foam of the latest generation of polymers. Under normal circumstances, the puncture protection lasts up to 2000 hours and even if you run your tire flat, you have enough time to patch: the Air-Liner lasts up to an hour * even without air. Technical data For all impeller diameters, the length is adjusted during assembly absorbs high frequency vibrations - Application: Road Race - Tire width: 28mm - Diameter: 28