Fresh for weeks. Seven-layer coextrusion film with a single-sided diamond pattern locks in freshness by 2-6 times and provides about 30% improvement in vacuum sealing performance. The Vacuum Sealer Bag Rolls for food are widely used in most thermal vacuum sealing machines. The bags are thickened, with a clear side thickness of 4 mil and an embossed side thickness of 14 mil. An option to cut the Vacuum Seal Roll to whatever length you need means no more wasted material. The 3-pack of 20cm (8-inch) Vacuum Sealer Rolls is perfect for most foods. Customizable sizes mean you can fit more things. The vac bags are made from BPA-free and food-grade raw materials. They are safe for use in the freezer, refrigerator, microwave, and can be boiled. They are great for freezing food and sous vide cooking.Color: Silver Manufacturer: Xiang Model Number: VSRB-20-50-3 Part Number: VSRB-20-50-3 Size: 3 Pack 20cm x 500cmUKPALO 3 Pack 20cm x 500cm Vacuum Sealer Bags Rolls, 4 mil Thicken Food Save Vacuum Sealer Bags, BPA-Free Vacuum Seal Rolls, Great for Vac Seal Storage and Sous Vide