Features:

1. 2L capacity: ensure sufficient water supply during riding
2. Quickly fill water, sealed and water-tight: large opening design, water bag is sealed, don't worry about water leakage
3. Dry and not stuffy: ventilated back design for quick heat dissipation
4. Reflective strip design, taillights can be hung: to ensure the safety of riding at night
5. The hook on the right fixes the straw to reduce shaking
6. Belt buckle: make the backpack fit the back, not easy to move
7. Left storage pocket: you can put small items such as mobile phones