Continental TPU Tube For Performance-Focused Riders You can never have enough tubes while you're riding. Depending on the storage space you have on your bike, you can probably carry a few tubes with you. The Continental TPU Tube is a seven-layer lightweight TPU inner tube for performance-focused and space-saving road, gravel, and MTB riders. It is lightweight, easy to repair, has a low rolling resistance, and has a small packing size. The highest grade of micrometer-thick TPU deployed across seven sealed layers maximizes airtightness and durability. The tubes are uncolored to further ensure the highest material quality and prevent air retention issues caused by dye-related surface imperfections. Every Conti TPU tube is quality-checked post-production. The base of the valve shaft is slightly conical in shape to improve fit to the wheel rim and reduce unwanted movement, while the valve is internally threaded to allow for the use of valve extensions or a replacement valve core. Features The highest grade of micrometer-thick TPU deployed across seven sealed layers maximizes airtightness and durability Tubes are uncolored to further ensure the highest material quality and prevent air retention issues Quality-checked in post-production SPECIFICATIONSWheel Size27. 5", 29", 700c Width1. 6" - 2. 4", 1. 6" - 2. 4", 25c - 35c Valve Type Presta Removable Core No Stem Length / Type60mm / Non-Threaded Weight43g (27. 5/29"), 35g (700c) | Continental | Tpu Tube 27. 5 X 1. 6 - 2. 4, 60Mm Presta Valve