LK Packaging Seal Top Sandwich bags provide outstanding protection, convenience and economy. The zipper type seal closes securely and is easy to open and close time after time. Because they are made only with virgin resin, they meet FDA requirements for contact with food products. 1.5 mil thickness for short term, lightweight or refrigerated storage Printed with white write-on strips and LK logo Bags are packed in convenient dispenser carton Meet FDA requirements for use in food applications