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 Large Water Backpack. This Water Bag is 44*23cm, made of 600D oxford cloth, with 210D waterproof lining. It contains 2.5L, weight 500g.