Capacities listed range from about 2 gallons up to 5 gallons, with other common sizes including 2.5 gallons and 3 gallons.
Closures described include zip-top (zipper-style) seals, slider/slider-track closures, and double-seal or double-zipper locks; some sliders provide an audible click when fully closed.
Listings describe bags made from plastic—commonly polyethylene—and some explicitly list a 2‑mil thickness; several also note food‑grade or BPA‑free construction.
Package counts vary from small packs (around 10–12 bags) to larger bulk packs of up to about 100 bags, depending on the listing.
Many bags are described as clear or crystal‑clear for easy identification, and some include a writable/label-ready block for marking contents.
Listed large sizes include examples such as 18×24 inches, 14×20 inches, 15×13 inches, and 16×14.37 inches.