gallon zip lock bags

Available capacities typically range from 1 gallon up to about 2.5 gallons. For reference, a standard 1‑gallon bag is roughly 3.78 liters.

Common closures include slider/slide zips and double-lock (double-zipper) seals. Some listings also describe the closure simply as a seal lock.

Most gallon bags are made from plastic—typically polyethylene. At least one option is described as plant-based (corn starch) and marketed as compostable.

Examples from listings show gallon bags around 10.56" × 9.3"–9.5" (about 27–28 cm) and larger 2‑gallon bags around 15" × 13". Exact dimensions vary by product.

Features that help protect food include durable plastic construction and tight seals—such as double-zipper or slider closures—which reduce air exposure and help keep food fresher in the freezer.

Useful convenience features include expandable or stand-up bottoms for upright filling, slider or click-style tracks for quick sealing, and write-on blocks for labeling contents and dates.

Some bags are described as reusable after hand-washing and air-drying. At least one compostable option is described as plant-based and is listed with TUV and BPI certifications in the product information.