Most beers are best served chilled, and the best beer bottle coolers and koozies can keep your beverage crisp and frosty for longer, even on the warmest of days. A good koozie will also keep your hands dry from condensation, which makes the whole experience much more pleasant.
Beer bottle coolers work by insulating your beverage to slow the effects of the external temperature on the temperature of your drink. When you’re shopping for a koozie, you’ll notice there are two main coverage options available. Some simply fit over the base of the bottle, while others cover the neck of the bottle as well. Koozies that don’t cover the entire bottle are the easiest to use, because all you have to do is slide your bottle into them. However, since they don’t protect the neck of the bottle, your beer is more vulnerable to heat. Full-coverage koozies may also offer additional cushioning if you accidentally drop your bottle, but they can be more cumbersome to use, as they require you to secure your beer with a zipper or screw top.
Two of the most common materials for beer bottle coolers are stainless steel and neoprene. Stainless steel is used in many of the best insulated water bottles, because double-walled, vacuum-insulated stainless steel is excellent at keeping beverages cool. Stainless steel is also very durable and can provide an additional layer of protection if you drop your bottle, which is always a bonus when dealing with glass.
You’ve probably used or seen neoprene koozies before, as they’re often used for beer cans — but there are neoprene koozies for beer bottles too. Neoprene is a synthetic rubber that’s durable, waterproof, and both lighter and cheaper than stainless steel. It typically isn’t as effective as vacuum-insulatedstainless steel at keeping beverages cool for long periods of time, but it’s definitely better than no koozie at all.