For such a simple idea, getting the growler right has proven difficult. While the swing top glass growlers many breweries offer do okay at keeping carbonation, they do little for keeping temperature. A better option is the Insulated Growler from Klean Kanteen. Made with high performance double-wall vacuum insulation, each will keep your fresh beer cold and carbonated for hours on end. On top of that, the stainless construction will keep it from shattering and spilling your one-off IPA on mangoes all over your kitchen floor. The Dark Amber happen to look sharp, too. It’s a smarter way to bring fresh beer home.