Most listings show quart, gallon, and 2‑gallon capacities across the results.
Common closures include double-seal locks, slide‑zip/slider seals, and seal‑lock style closures.
Listings describe the bags as suitable for freezer use and designed to help protect food from freezer burn. Some listings state tested protection for up to 12 weeks (for example, on ground beef), though specifics vary by product.