Durable and Safe Material: Food storage freezer bags are made of BPA-free food-grade PE material, which meets edible standards. With thickened material and widened bottom design, it is durable and will not tear or break, and will not let food spill. Multiple Choice: Reusable zip lock bags includes 20pcs small, 15pcs medium, 15pcs large,totally 50pcs. Whether you need to freeze fruits, vegetables, meat or snacks, these three sizes of freezer zip lock bags can meet your daily storage needs. Secure Zipper Lock Seal: Food storage freezer bag is equipped with a reliable zipper lock seal design. these bags can be easily opened and sealed which is convenient for daily use and ensure the freshness of stored items. Thoughtful Packaging: The thickened packaging box is strong and durable, which can ensure that it is not easily damaged during transportation and the fresh-keeping bag is safe to use. Tear open the packaging box and you will get a fresh-keeping bag in one pull, which is convenient and quick. Writable Design: The surface of Food storage freezer bags is writable which can easily mark the contents or dates and organize them conveniently, so you can eat fresh food with confidence.The widened design at the bottom of freezer bags doubles the capacity and makes it difficult for food to fall out.