Pack of 500. Featuring a write-on block on the package for mentioning date of packaging and contents, Double Zipper Quart Bags are made from low density polyethylene. These food storage bags, which meet FDA requirements for food applications, are completely recyclable. The Double Zipper Quart Bags come equipped with a double zipped closure that blocks out air and seals in the freshness, while facilitating fast and easy sealing. They are great for storing and packaging of pre-portioned foods like fruits.