VacMaster Full Mesh use patented Mesh technology to keep foods fresh up to 5x longer than traditional zippered bags. Its unique design features a third layer of perforated material that creates a channel for air to escape, ensuring a constant vacuum and creating a positive seal. Designed for use with all vacuum packaging machines. Heavy-duty, 3 mil. material for optimum freshness and a reliable seal. Bags can be frozen, refrigerated, microwaved, or boiled. 15" roll, 50' long. 1 roll per box.