Genuine VacMaster 40732 Vacuum Chamber 3-Mil Pouches 12 Inches by 8 Inches - 250 Pouches Includes: 250 Bags- 12" x 8" Heavy-duty 3 mil thick, Nylon/Poly material For chamber sealers with 12-Inch seal bar or longer, especially for VacMaster DUO550. Can be frozen, refrigerated, microwaved, boiled and cooked sous vide BPA-Free and FDA approved; compatible with chamber vacuum sealers