WTB NanoAir TPU Tube - 29 x 1.9 - 2.5, 48mm Presta Valve top-cap Air spring top cap uses

Air spring top cap uses cassette tool for easy volume adjustments

Knurled handle

Anatomically designed for greater comfort and tailored with adjustable fit

In-Mold PC with EPS liner

WTB NanoAir TPU Tube - 29 x 1.9 - 2.5, 48mm Presta Valve top-cap Air spring top cap usesLighter, more compact, and more durable. Yep, you get all three. The NanoAir TPU (Thermoplastic Polyurethane) tubes were designed to be compact and pack down to one third of the size of a traditional tube. It's 60% lighter than a traditional tube, making it a great option to reduce rolling weight and easy enough to carry a spare. The NanoAir TPU tubes are tough, with a special construction layup of material these are more durable than traditional