ULTRA Vacuum Sealer Bags are ideal for keeping food fresh up to 5 times longer than traditional methods. Lock freshness and flavor in and eliminate freezer burn,reduce spoilage and waste. The heavy-duty multi-layer construction is tear-resistant,and the bags come pre-cut and pre-sealed on three sides for easy use. Material is BPA,PVC,and phthalates and is microwave,marinate,boil,refrigerator and freezer safe. ULTRA Vacuum Sealer Bags are compatible with and other brands of vacuum sealers. Bags are available in various sizes..