Even the greatest of adventurers need a little maintenance now and then, and your AF is no exception. This pack comes with 2 of each of our meticulously designed gaskets: the cap gasket, pour-over lid gasket, and cocktail shaker gasket. Whether you&';re brewing a piping hot coffee, shaking up a trailside cocktail, or simply hydrating with ice-cold water, these gaskets ensure your All-Day Adventure Flask is always ready for the task. Installation is straightforward - simply remove the old gasket and pop the new one in place. Chopsticks always work best and remember never to use anything sharp. Note: This product is a replacement part specifically designed for the Hibear All-Day Adventure Flask. Keep your flask adventure-ready at all times!