Wrapables Large & Small Foldable Tote Nylon Reusable Grocery Bags, Set of 2, Black

I bought these as my work refrigerators have limited rooms and getting a lunch tote in there was a struggle. The smaller of the bag works great to bring in my lunch, and can easily fit in the fridge. Since then, I also have taken them to a farmer's market. They can be folded back up and fit in their pocket (never as nice as the initial time, but it works), and can be stuck in shorts' pockets. Easily able to pull out and use. I am not sure it will hold a lot of weight, but for things like lunches, or picking up some veggies at a farmer's market it will do the trick. They are low cost, and reusable so I don't feel as bad as if I was using disposable lunch bags, or plastic single use bags.