Pirelli Angel Smar Tube X 700c Protection and Comfort The Pirelli Angel Smar Tube X 700c is Pirelli's latest innovation in the world of tubes designed for protection and comfort for daily riding and fast urban commuting. It is made with TPU, a material that can save up to 70% of the weight while being stronger than butyl as a raw material. This product is 3 times thicker than a standard Smar Tube and allows the cyclist to be more agile while being extremely protected at the same time. Features3 times thicker than a standard Smar Tube allowing it to be extremely resistant and protected Fits into pockets and bags better so you can carry more spare tubes Stronger than butyl as a raw material SPECIFICATIONSWheel Size700c Width28 - 42mm, 42 - 62mm Valve Type Presta Removable Core No Stem Length / Type42mm Non-Threaded Weight145g - 183g | Pirelli | Angel Smarttube X 700C 700X28-42C 42Mm