about this item： Collapsible water bottle?: 2 kinds of capacity, 10L(41x38cm) and 5L(33x30cm), two sizes in one package. Suitable for food use: free of bisphenol A, safe and non-toxic, made of food-grade polyethylene film and neutral in taste. Easy to use and carry: large screw-on cap, wide opening for filling and emptying the canister easily. Folds flat when not in use and stands upright when full. The water bottle can stand on the floor without falling and it takes up very little space when empty. Foldable and ultra-light: you can roll it up for easy storage and transport. The water bottle is reusable for a long time. Suitable for many applications: ideal for camping, vacation, walking, hunting, travel, car, picnic, barbecue, etc. Content : 1 x 5L drinking water bag and 1 x 10L drinking water bag. Note: The data is manual measurement, please allow 1-163cm error, due differences between light and screen, there will be a certain color difference, the specific received in kind prevail.