Exar Ultralight TPU Tube Ultegra Di2 An integral part of Shimano's

An integral part of Shimano's new 12-speed road lineup

New leak-free Dolphin Breather Valve technology keeps liquids inside

Meets at your waistband so won't ride up on move

Two external water bottle pockets

Nuun Hydration is hydrating the planet one runner

Exar Ultralight TPU Tube Ultegra Di2 An integral part of Shimano'sEXAR TPU ultralight inner tube has a more comfortable cycling feel, lighter weight and is premium quality designed to help you get out in front and stay there. The excellent toughness of TPU material can effectively reduce the probability of tire puncture, keeping you ready to explore any road. Lighter Weight for Improved Acceleration The Tube 700c weighs only 36 grams, which is 3 times lighter than traditional rubber inner tube. The Lighter weight