Mountain Bike Backpack: The waterproof and tear resistant material, two-way zipper, hydration system, can be used as a drinking bag, suitable for 2 liters of water reservoir, special hole design for water bag (not include drinking bag)
Reflective Strip Design: Hydration backpack's chest strap with emergency whistle and safety reflector, can improve visibility when riding at night adds safety to your outdoor and night sports
Comfortable: The hiking backpack is thin, ddjustable shoulder, chest, and waist straps to ensure a stable for comfort and non-slip
Outdoor Sports Backpack: This water backpack designed specifically for road bike, bicycle riding, snowboarding, skiing, day hiking, music festival and outdoor activities
Thickened: The water bladder backpack straps of the hydration bladder pack are made of thickened breathable mesh for optimal breathability and comfort, keep you cool and comfortable on any adventure