Features of Sigma Tube 70: A highly functional film that achieves a 3-layer 80μ strength at 70μ. The opening is shaped to remove the patented low-curl three-sided seal side seal, making it an ecology and cost saving option for commercial use. Beautiful tube bag with excellent clarity and luster. -40℃ freezes to 100℃ 30min voile in one piece. 100-count outer bag has GTIN (JAN) cord and ITF code printed on outer box. This is not a high barrier and does not allow deoxygenation. Cannot be used for retrieve packaging applications.