You're viewing our VacMaster 3 mil barrier pouches 16" x 18" 500 count. VacMaster's vacuum chamber pouches are made for use with commercial chamber vacuum packaging machines. Chamber vacuum sealers provide a tighter vacuum seal than most suction type sealers, making these pouches perfect for Sous Vide cooking. Keep foods fresh for customers or simplify storage in your commercial kitchens. Pouches can be frozen, refrigerated, microwaved, or boiled. The nylon/polyethylene pouches are constructed of heavy-duty 3 mil-thick material that keeps food at optimum freshness with a reliable seal. The pouches keep food fresher up to five times longer, and the puncture resistant pouch eliminates freezer burn and dehydration. VacMaster pouches are BPA-free and FDA approved. If you have questions about our products we are here to help you.