Lighter more compact and more durable. Yep you get all three. The NanoAir TPU (Thermoplastic Polyurethane) tubes were designed to be compact and pack down to one third of the size of a traditional tube. It's 60% lighter than a traditional tube making it a great option to reduce rolling weight and easy enough to carry a spare. The NanoAir TPU tubes are tough with a special construction/layup of material these are more durable than traditional butyl tubes. Having one of "those days" and you ride through a patch of thorns and get another flat? Don't worry each tube includes a few extra TPU patches to keep you rolling. Made from TPU (Thermoplastic Polyurethane)Lightweight and durable inner tube solution that's compact while offering reliable performanceReduces rotational weight compared to a butyl tubeAn ideal spare tube to carry on any rideAlloy presta valveIncludes TPU patches