took a chance on these after searching for washable bags for my work lunch. most of these reusable bags are more for grocery shopping- and they were way too big for what i needed. these are perfectly sized- yet hold the weight of several full cans/bottled drinks, tupperware and various bags/fruits, etc. they flatten and reshape to fit in a fridge stuffed with other giant lunch boxes. they fold to literally nothing when empty. a zipper or closure would maybe help but i tie the handles if i need to keep it closed, but a zipper would be helpful. best of all-i use one for one day, then i throw them in the wash with a little vinegar and air dry. good for pre packing the week! i was pleasantly surprised by patterns, i got a few weird ones and a few repeats but they are mostly cute. they will make good gift bags too!