Material: Double-sealed seams, the outer layer is a silver light-proof composite film, and the inner layer is a food-grade safety film. Sturdy, unbreakable, leak-proof. With Faucet: The drinking bag and the faucet are packed separately. When you fill the water, pour it into the water bag and close it with the tap. Recyclable and BPA Free: All materials are BPA free. Safe for the environment and you, Reusable water bucket Convenient storage：after use, the collapsible water bag can be stored in drawers, bags and suitcases, it does not take up space compared to plastic water buckets, it is very convenient to carry Long Life: The sealed nozzle prevents oxygen from entering when pouring water. The outermost lining protects from sunlight, The water enclosed in the bag will not produce algae or bacteria for a long time.