Enjoy extra frosty beers (that stay frosty) from the comfort of your camping chair or a lounger by the pool. We designed our reusable vacuum-insulated stainless steel beer mug (inspired by those large. handy beer steins we all love) with lots of intuitive. brew-friendly features: Leakproof lid. sturdy side handle. built-in coaster. effortless flip 'n' sip opening and long-lasting temperature retention (both cold and hot!). And at 1 liter. you'll get to pour way more than just a standard can in there which you can refill to your lager. stout or ale's content.