Remember when I mentioned that growlers–ceramic beer jugs–are starting to make a comeback? Well, the Hydro Flask is a new, 21st century take on the old-school growler design. This 64 oz. container uses a special double-walled vacuum insulator which is designed to keep your favorite microbrews carbonated and super cold for longer periods of time–up to 24 hours, actually. It can also keep liquids hot for up to 12 hours. It’s made from 100 percent recyclable materials and comes in a variety of colors: black, copper and stainless steel. Plus, they’re guaranteed for life!