This backpack is color optional. This 2.5L Large Water Hydration Bag is 16*5*47cm, made of 600D dense oxford cloth waterproof. It fits for outdoor use too.

This backpack is color optional. This 3L Large Water Hydration Bag is 18*5*43cm, made of 600D dense oxford cloth waterproof, lining 200D Nylon. It fits for outdoor use too.

This backpack is Drinking Liner. This 3L Food Grade TPU Water Bag Bladder is 40*17.5cm, made of ABS and TPU. It is a component of water hydration bag, weight 0.12kg.

This backpack is Drinking Liner. This Water Bag Bladder is 47*18cm, made of ABS and TPU. It is a component of water hydration bag, weight 0.2kg.