Safe and healthy: The collapsible water tank is made of eco-friendly and safe PE material, non-toxic, BPA-free, no peculiar smell. You don't have to worry about health issues. The drinking water canister is transparent and soft, does not leak and allows you to reuse it. LEAKPROOF AND STABLE: Despite the flexibility, the canisters are absolutely tight and leak-proof. When full, the bottle is stable and secure. The water bladder is suitable for temperatures between -30 and +60. When three-quarters full, the liquid can also be used frozen as a cold compress. Strong and sturdy: We thicken the collapsible water tank to make it stronger and more durable, withstand higher pressure and hard to break. The diameter of the drinking water canister nozzle is 3.5cm and can be easily filled with drinking water, drinks or ice cubes. The container is easy to fill and clean. The ergonomic handle ensures comfort and facilitates pouring. Easy to carry: This water canister is ideal for camping, hiking, hunting, picnic, mountaineering, long-distance travel, etc. In addition, the camping water bag can store a large amount of water for you in disaster or emergency, and meet your water storage needs. The water tank is very light and can be folded to save space. Each weighs only 0.132 kg, which is convenient to carry.