TPU tubes are less than half the size and weight of a butyl tube- Saves 200+ grams in your tires for lower rolling resistance- Patented technology mechanically attaches the valve to the tube itself; a welded joint further prevents failures- Compact size allows carrying two tubes when only one would previously have fit- Threaded aluminum valve to help the tube resist heat from electric pumps- Removable valve core- Rim and disc brake compatible- Patch and alcohol wipe included- 24-43mm (50mm valve) 38mm x 77mm x 24mm folded. 45g- 24-43mm (70mm valve) 39mm x 95mm x 21mm folded. 46g- 44-64mm (50mm valve) 58mm x 77mm x 26mm folded. 62g