Genuine VacMaster 50717 3 Mil 6 Inch by 10 Inch Zipper Vacuum Chamber Pouches Includes: 1000, 6 inch by 10 inch zipper pouches per box Features a re-closeable zipper for more flexible use Heavy-duty 3 mil thick, Nylon/Poly material, BPA-Free and FDA approved Use with Chamber Vacuum Sealers only! Pouches can be frozen, refrigerated, microwaved, boiled, or cooked sous vide