Commercial-grade Chamber Vacuum Sealer Barrier Pouches provide superior freshness protection and a reliable seal, keeping food safe from freezer burn and dehydration. Keep food fresh up to 5x longer than zipper bags. Heavy-duty 3-mil thick nylon/poly construction. These high-quality pouches can be frozen, refrigerated, microwaved, or boiled, and are resistant to puncture and abrasion. For use with all VacMaster VP Series Chamber Machines. Not for use with home suction-type machines. Pack of 500 6" x 12" pouches.