What can you say about a tube - it holds air, that's about it. Isn't terribly heavy, hasn't leaked yet, etc. I've never had a problem with these as long as proper air pressure is maintained. Quality seems okay, and price isn't too high.
The smooth valve stem is fantastic. Many tubes have a threaded stem, which eats up the rubber seals in your pump & makes it difficult to smoothly disengage the pump without losing much air. The smooth stem on the Michelin tube easily slides out of the pump head, making inflation a breeze.Get more detail about Michelin Airstop Butyl Road Bike Tube (Presta Valve).
