This folding water bag is made of food-grade PE material, which is safe and non-toxic, and can be safely filled with drinking water or beverages, it will not pollute the water. Wear-resistant, not easy to break, and can be used for a long time., This blue design of water storage containers can effectively avoid direct sunlight and can keep the best taste of beverages, juices, and wine in the water bag., The convenient sealing design can effectively prevent the liquid inside from leaking out, and the bottle cap is easy to use and will not hurt your hands., Water bag is very suitable for outdoor use, such as camping, vacation, hiking, hunting, travel, picnic, barbecue, fishing, and others.,