2-ply, inside layer 60 µm food contact approved Polyethylene, outside layer 15µm Polyamide (Nylon). Total thickness is 75 µm. The used materials act as an UV filter. Embossing improves the air flow out of the bag during the vacuum packing process. Bags can be used in temperatures from -20˚ up to 100˚C. Suitable for chamber and external vacuum packing machines.