Product introduction: [3xXl water bag]: the 3xXl water bag can hold XL water, which is convenient for folding and storage. The ultimate crisis preparedness program for power outages or other disasters. [water bag material]: inside the bag is a layer of food grade PE film, and outside is a layer of metallized PE film. This makes it have strong tear resistance and stability. The inside of the bag is sterile before opening. [anti light composite film]: compared with other storage systems, the advantage of this bag is that the outer layer is opaque. As a result, the ultraviolet rays of normal sunlight cannot penetrate, thus preventing the formation of algae. As a result, the water in the bag can be kept for a month without additional treatment. [faucet sealing joint]: it is very convenient to add water. Just turn on the tap and pour the water into the water bag. Turn it back to the tap and turn it off. You want to get water at home like a faucet. It's very convenient and fast. [compact]: the water bag is foldable and ultra light. When empty, it can be folded for easy storage and carrying. It can be easily folded for storage or reuse during your next hike, camping or picnic.