Lighter, more compact, and more durable. Yep, you get all three. WTB introduces the NanoAir TPU (Thermoplastic Polyurethane) tube. It's compact, and packs down to one third of the size of a traditional tube. Just think of the extra things you can fit in your pack a beverage, snacks, maybe even a snack for your friend that always forgets one, yea you know the one. It's light. Like we mean really light. 60% lighter that (cough cough) paperweight you have been lugging around. But it's so light, you say, Don't worry, these TPU tubes are tough, with a special construction/layup of material these are more durable than traditional butyl tubes. Having one of those days. Don't worry, we added a few extra TPU patches to keep you rolling. Features:Light and Compact:- It's light. Like we mean really light. 60% lighter than (cough, cough) paperweight (butyl tube) you´ve been lugging around. The NanoAir TPU tube is tiny. It packs down to one third of the size of a traditional tube. Just think of all the extra things you can fit in your pack a beverage, snacks, maybe even a snack for your friend that always forgets one, yea you know the one.Patches included:- Two Glue-Less TPU Patches Included with every TPU tube. Quick and easy repairs on the road, or trail.