Review on 🥤 Seattle Sports AquaSto BigMouth Collapsible Water Container Bag, BPA Free Food Grade Storage Jug for Camping and Hiking, Backpacker's and Emergency Essential, Leak-Free and Freeze-Compatible Foldable 8 Liter by Rick Kreutzer

Bought two. Both will flow out from under the lid unless sitting upright. Roughly the opposite of what a collapsible water bag is supposed to do. You can't fill it or partially fill it and hide it in an empty space in a truck, RV, or van. Some assholes have designed the "cuffs" to come off with the lids, so they're pretty much useless. They won't prevent you from losing your cap and can fall off while filling if you're not careful as the tether design is the opposite of how it should be designed. It would be safer to take off the hat and put it in your pocket.