.Universal vacuum bags can be used in most leading brand vacuum sealers. .Vacuum sealing extends food storage time locking in freshness, flavor and nutritional value .Heavy-duty bags with air-removal channels for maximum freshness .Made from fda listed food safe materials .Great for food and non-food uses like preserving collectibles, valuable documents, silver or electronic items! .Material: pe, pa composite .Thickness: 0.14 to 0.20mm at the line side 0.09 to 0.12mm at the side without lines 1) 50 pcs of vacuum bag per set, each set per one polybag and then packed in a gift box, 20 gift boxes (sets) per master carton. 2) polybag will be printed with suffocation warning.