VacMaster 40725 3-Mil Vacuum Chamber Pouches, 10-Inch by 13-Inch, 250 per Box Heavy-duty 3 mil thick, Nylon/Poly material Keeps food fresh up to 5x longer Prevents freezer burn and dehydration Frozen, refrigerated, microwaved, boiled, or cooked sous vide BPA-Free and FDA approved; compatible with chamber vacuum sealers