Most listings show the common sizes as quart and gallon freezer/storage bags.
They typically use either a double-seal lock (press-to-close zipper) or a slide/slider zip closure.
The bags are reusable after hand-washing and thorough drying. Do not reuse them after storing raw meat, fish, eggs, or foods that could trigger allergies.
The tinder zipper pull can be ignited with a ferrocerium rod or a compatible sparker. It’s designed to attach to jacket or pack zippers for easy carrying.
Product listings name plastics such as polyethylene and polypropylene (also noting dye and ink). Health-related labels shown include BPA-Free and Phthalate-Free.
Examples of package quantities shown in the results include 28, 32, 38, 66, and 76 bags per pack.