주요기능

• Constructed by waterproof 600/900D high density Nylon material comes with a hydration bladder.
• Backpack with adjustable shoulder strap and chest belt, suitable for heavy carrying.
• Equipped with a tube with a bite valve to drink, so you don't need to hold it to drink.
• Two layers cargo design, one for hydration bladder, and the other for extra carrying purpose.
• A switch on/off bite valve, convenient to control the flow of water. Perfect to use when hiking, climbing, riding and other outdoor activities.