Craft beer drinkers once believed that only flip-top growlers offered a lasting seal. It was once thought that American jug-style growlers were simply economical beer vessels that crudely transported your beer home for immediate consumption. There was also a time when we believed the world was flat. Luckily, the American spirit cannot be tamed. The GrowlerGasket by GrowlerGrips provides a 100% airtight seal that keeps jug-style growler beer fresher longer — up to two weeks! Proudly made in America.