Nitrogen Ultegra Di2 Size:XL Bib holder with a zippered

Bib holder with a zippered pocket

This power meter has a longer battery life

Breathe Easy—A ventilated palm design allows players' hands to breathe

these are a great all-purpose pad

Good ventilation with 4 air inlets and 14 air outlets connected with flow channels

Nitrogen Ultegra Di2 Size:XL Bib holder with a zipperedDeveloped and engineered for optimal interaction between aerodynamic frame design, modern geometry, flexible rider fit & world class components, the Nitrogen platform is built to perform in real world conditions, offering the performance and ride quality Argon 18 is recognized for. The Nitrogen delivers speed, lightness, fit and ride optimization.