Don’t care for koozies but hate warm beer? Throw some technology at the problem. The Artican ($20) has two layers of vacuum-sealed steel and a ‘core’ that you freeze and screw on to the bottom. Basically, the outside of the Artican will be a comfortable temperature for your hand, and the interior will be nice and cold. In fact, it’ll keep your 12-oz can cold for three hours. And if you can’t finish your beverage in that time, you don’t deserve to have a beverage.