4 MIL – Extra heavy-weight protection when storing or shipping heavy items that may have protruding edges
No need for a large inventory of different-size poly bags
displaying
metal parts and fasteners
2 MIL – Most popular MIL thickness for storing and shipping common items such as crafts
Lay Flat Poly Bags - 26" x 42", 2 MIL MIL:2 MIL 4 MIL – Extra heavy-weightMade from 100% virgin polyethylene Meet FDA and USDA specifications for food contact Most commonly used thickness for packaging, displaying, storing and protecting food, crafts, and various industrial parts Great for items that need to be protected from moisture and dirt, but also need the durability for shipping, such as dolls, rivets, fuses, washers, etc.