Ultralight hydration bladder backpack, bicycle backpack with hydration system, 2L, ROCKBROS Bike Carrier You can switch freely according

You can switch freely according to weather conditions and personal preferences to get a good wearing experience and be fashionable while working out

EXCELLENT BREATHABILITY

Large capacity: 19

the translation range can be expanded by an additional pinion

Hole circle: 96/64 mm

Ultralight hydration bladder backpack, bicycle backpack with hydration system, 2L, ROCKBROS Bike Carrier You can switch freely according2L Capacity & Hose. The 2L capacity hydration bladder bag easily meets your drinking water needs while riding. The large diameter of the water inlet makes it easy to fill the bladder. Comfortable and Lightweight. There is an additional pocket outside the hydration bladder, made of splash proof material on the front and breathable material on the back and shoulder straps. The backpack is ergonomically designed and weighs only 331g. Dual Attachment. The