Pro-line Vacuum Sealer Rolls are made from BPA Free - Non-toxic plastic and incorporates Cross Air Venting Technology to provide effective removal of air during the vacuum process. Boil, freezer and microwave safe, it's guaranteed to lock in the freshness. The Proline VS-283 Vacuum Sealer Rolls are compatible with all Proline Vacuum Sealers and Chamber Sealing Machines. Proline Vacuum Sealing Rolls and Bags are universal products, therefore suitable with most vacuum sealing machines on the market.