Then, this happened to one of them:
I wasn't very happy about it! But the bags are pretty thin and probably won't stand up for much longer.
So, I made one of my own from some heavy duty fabric I found at Goodwill.
It's a little bigger than the Safeway ones and the straps are thicker. I like it, I just need to get some more material to make more. It works way better than the other bags! I'm pretty proud of it since I made it without a pattern!