FungLam vacuum sealer bags are made of professional food grade material, the pre-cut food grade vacuum bags are BPA free, safe and perfect for freezer, microwave and vacuum cooking food storage while maintaining freshness, taste and nutrition without freezer burn and dehydration. Offering maximum convenience for storing leftovers, preparing make-ahead meals and portioning bulk food. Thanks for its universal design, FungLam vacuum sealer bags work with most vacuum sealers.For example Food Saver, Seal a Meal, Weston, etc