These Ziploc bags are fine. They're small but work as they should. I use them for lots of other things besides food. For food, they seem to be airtight and leak-proof. The tops close fine and I have no issues with opening or closing them. They aren't super thick but thick enough that they won't puncture easily. I use them for keeping small household items in, jewelry, you name it. They're just a little pricier than I would like to pay for plastic bags though. But otherwise, they're dandy.