Four mil zipper bag work well for longer-term storage, or storage of heavier or bulkier items. The zipper type seal closes securely and is easy to open and close time after time. These bags are excellent for storing, displaying, protecting and shipping all types of product. Because they are made only with virgin resin, they meet FDA requirements for contact with food products. Bags under 15″ wide are packed in cartons of 1,000 with inner packs of 100 bags each for added convenience and to help reduce waste.