Use Nesco Vacuum Sealer Bag Material to reduce food spoilage Polyethene 80 Nylon 20 material Protects food from freezer burn BPA PVC and Phthalates free and safe to microwave boil and freeze Multi Layer tearresistant with crossventing channels on both sides 50 PreCut Quart Sized Vacuum Sealer Bags 86 x 1180 These bags work great for preparing food with the sous vide technique