I finally got a $15 bag--it is much better! No duct tape needed! It can't double as my hot water bottle, but that's okay!
It's a fountain style, so it fills at the top. What stops the air from going in if I weren't paying attention? The other bag would just kind of 'suck itself dry' and I'd know. I'm just wondering....I know getting tense watching it and wondering is counter productive. I've only used it twice so far.
Thanks. someday, maybe a colema board. For now, just my red friends.