Provide outstanding protection, convenience and economy. Even though they are more economical than our standard seal tops, they are able to perform effectively in almost all of the same applications. 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. 1.4 mil.