Keep the slick in your zip with this zipper lubricant! Cordova's soft cooler zippers are specially designed to lock out moisture and maintain the cold inside, so they may need a bit more elbow grease to operate than the zipper on your jacket or your friend's stylish fanny-pack. To ensure a smooth and consistent zip, we recommend a lube application at the end of your adventuring season or after a particularly wet and wild excursion. Here's how to keep the slick in your zip: Clean any muck or moisture off the zipper and teeth (a clean rag will do, brush and floss optional) Make sure the zipper is fully open Apply the included lubricant along both sides of the teeth, top and bottom Work that zipper up and down about five times to evenly distribute the lubricant Recommend repeating this process if the cooler is being stored for extended periods; ensure you store your dry gear with zippers in the closed positio