BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 and Ultegra R8150 Systems Ball Cap The gradient lenses are nicely

The gradient lenses are nicely toned and give a cool effect to what is considered the sunglasses that shaped entire cult movements

The sleeve is lightweight and breathable with its airy mesh backing and synthetic construction

Its ultra-versatile

Waterproof DryVent™ bootie construction

Wash with soft brush and lukewarm water

BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 and Ultegra R8150 Systems Ball Cap The gradient lenses are nicelyShimano Di2 Batteries. Must purchase battery, charger, and power cable to complete the system. All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions Use Di2 system checker to update component firmware from http: e tubeproject. shimano. com Compatible with thinner, next generation electric SD300 wires and R9250 and R8150 series systems Features three SD300 wire