In sum, you may not need a separate 3-1-1 clear liquids bag at all, but if you do—or you think you might—the Ziploc Freezer Quart size bag meets every requirement you’re likely to encounter.

When it comes to products that are useful in many facets of life, the first two that come to mind are duct tape and… Ziploc bags ... that I outgrew the quart size bag. I now use the gallon ...

But there are important TSA rules you’ll need to follow – starting with a carry-on quart-size ... toiletry bag if you don’t want to. Even a quart-sized plastic bag—like a Ziploc bag, ...