5 is a hydration backpack optimized for ventilation and weight

Weighing just 26 grams without screws

USB-C waterproof charging(cable not included)

Cycle-ready midsole

making it easier for athletes to calculate their carbohydrate consumption during training and racing

ZIPP 303 XPLR S Wheelset silca 5 is a hydration backpackThe Zipp 303 XPLR S is big upgrade for gravel riders without a big price tag. This wheelset borrows key innovations from our premium wide gravel wheelset, it is affordable and robust for discerning gravel riders. This wheelset is the fastest on gravel, thanks to its mega wide rim that integrates seamlessly with approved gravel racing tires.* In gravel, resistance and vibrations from bumpy surfaces create a barrier that slows riders down. To combat