Lifeunion 5/10 litres Collapsible Water Container, BPA Free Plastic Water Carrier, Outdoor Folding Water Bag for Sport Camping Riding Mountaineer Approx.5 Litres Collapsible Folding Water Container,Convenient, durable, reusable, space saving, and non-toxick. Made of clear non-toxic plastic.Large spout for easy filling and pouring.Constructed to hold both saltwater or fresh water. The screw cap keeps the water in, and provides a leak proof seal. Rollable and Foldable with metal carabiner for clip-on and storage,Freezable - keeps drink cold for hours. To store, simply air dry, fold and put away. It folds flat when empty (or you can roll it up) for easy storage. BPA-free, Food Grade Material, safety to store water and other drinks Portable collapsible size, lightweight &amp; space save in storage 5L and 10L for you to select in accordance with your needs Screw-on cap provides a leak-proof seal, convenient to use Freezable Containers bring cool in your outdoors in the summer Step 1: At night, fill your collapsible water container half full. Step 2: Stick your collapsible water container in the freezer. Step 3: Come morning.fill it up &amp; take water carrier to school, work or play!