Feature:
Constructed by waterproof 900D high density Nylon material.
Two layers cargo design, one for hydration bladder, and the other for extra carrying purpose,can hold digital products and other stuff.
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.
A switch on/off bite valve, convenient for control the flow of water.
No Taste, No Virulent.
Neoprene tube cover keeps water cool for hours.
Bite Valve Cover keeps Bite Valve clean from dirt.
Perfect to use when hiking, rock-climbing , riding and other outdoor actives.

Specifications:
Item Type: Hydration Backpacks.
Closure Type: Zipper.
Hydration Backpacks Capacity: 3L.
Water Bladder Bag : 3L.
Material: Nylon + TPU.
Size: Approx. 45 x 20cm (L*W) .
Compact and lightweight multi-function backpack.

Package included:
1 x 3L Cycling Backpack with Water Bladder Bag.
Or 1 X Water Bladder Bag.

3L Water Bladder Bag Hydration Backpack Pack Hiking Camping Cycling Outdoor USA