The Michelin Air Stop Butyl range of tubes provide the best in everyday reliability, excellent pressure retention and puncture resistance. The Michelin Airstop inner tube: a sure thing for all road biking enthusiasts A dual-performance inner tube The Michelin Airstop inner tube provides excellent air retention and puncture resistance, whatever the activity. Butyl for optimum pressure Thanks to its butyl rubber, the Michelin Airstop inner tube ensures outstanding pressure retention Several valves allow this inner tube to adapt to all conditions The Michelin Airstop inner tube was designed with a variety of different valves. Key Features: Butyl rubber inner tubesPresta Valve & Schrader Valve compatiblePresta Valve (Long Valve 52mm version available)