NanoAir tubes are made from TPU (Thermoplastic Polyurethane) are 60% lighter weight and more durable than traditional butyl tubesCompact size out of the box is 1/3 the size of a standard tube, leaving more room in your pack for important cargo, like snacksEach tube includes additional glueless TPU patches should you find your way into the patch of thorns on the side of the trail or road48mm presta valve offers a well rounded size for a variety of rim profiles700x18-32PV48mm0dNon-Removable35gW015-0089UPC/EAN/GTIN: 714401150898