Review on Waterdrop Gravity Water Bag: Portable Foldable Bag for Backpacking, Camping & Emergency - 1.5 Gal, Compatible with Water Filter Straw by Phil Anderson

. It is amazing and easy to have water in storage. Easy to fill, close and hang up. I connected the drain hose to the bag in storage. The Sawyer Mini Filter simply attaches to the end of the hose. When you're done filtering, lift the filter off the bag as the hose clamp didn't stop the water flow. Filter and hose moved to sleeping bag to keep warm at night. About 3/4 gallon of water is actually frozen in the bag, not solid but about 75% frozen. The bag was not damaged. I dumped the ice cream, refilled it, and used it for its intended purpose. The hose maintains a certain folded shape during use and is easy to hang to keep the refill bottle on the floor. I washed the bag and hose at home. Let it air dry and put it away for the next trip.