Premium Material: The water storage bag is made of safe and soft food grade polymer material, BPA free, non-toxic and eco-friendly. It is an outdoor standing water storage tool. Suitable Size: We will provide you with two different sizes of water bags: 10L: 38 x 41 x 15cm/5L: 32x30x14cm. Each size of hydration pack has super large water storage capacity and will suit you for different occasions. Exquisite craftsmanship: The water reservoir has undergone many processes, with tight corners and no water leakage, which is safe to use. The water bag is soft and easy to fold and carry when not in use without taking up space. Tap Design: Our water carrier is designed with a tap, which is convenient for water disposal and makes water quality more hygienic and safe. How to use the faucet: check whether the faucet is complete. Remove the collar from the faucet. Completely remove the faucet collar and faucet cover. Water can be drained out by lifting/pressing with fingers. Wide Applications: Collapsible hydration packs are the best choice for outdoor travel, perfect for outdoor activities such such as camping, hiking, hiking, fishing, picnics and barbecues. It can also be used for household water storage and vehicle water storage.