We tested the ultimate beer koozie and it did not disappoint.

Koozies. Prevents your hands from getting cold and your beer from getting warm. There's nothing better than this. Something that will keep your beer cold for much longer, that's it.

Friday afternoon, after a long week, it's time to move on. happy hour, Gizmodo's weekly sake etc column. A cocktail shaker packed with innovation, science and substance. This is not a euphemism, just a good idea.

Koozies are everywhere. You've probably seen these soft foam beer can holders handed out for free at baseball games, adding some color to a bleak construction site. Your uncle in Myrtle Beach has about 50 of them.

However, what separates it is yeti cooler Among all the freebies out there (aside from the price) is that it's made of 18/8 stainless steel with double-wall vacuum insulation instead of foam or neoprene. This is basically a thermos flask that keeps canned beer cold for a very long time. How much exactly? I decided to find out.

Test #1: Canned food on a hot day

made by yeti Some of the best drink coolers They range from very large, with 268 beers while maintaining a 2:1 ice to beer ratio, to very small. Colster is the smallest. One beer, no ice. This is what I tried.

Here's how it works: Loosen and remove the plastic gasket at the top of the colster. Add a cold 12 oz can of beer. Replace the gasket. drink.

For testing, we placed three cans of beer in the freezer and brought them down to 31-32 degrees Fahrenheit. I then dragged the space heater into the small bathroom and managed to get it up to temperatures ranging from 88.6 °F to 88.6 °F. 101.2 degrees Fahrenheit. The fluctuations were caused by me going in and out of the bathroom and the heating cycle, but all three of us were exposed to the same conditions the entire time. It was hot.

Then I opened the can and put one in the Colster, squeezed one into an old Coleman Koozie that my aunt had (probably better than a standard Koozie), and left one bare to act as a control. I did. Using an OXO instant-read digital thermometer he measured all three, swirling them before each measurement to ensure an even distribution of temperature.

result? The yeti became as loathsome as any other snowman.

As you can see, Yeti took an early lead and never looked back. After 60 minutes, the temperature was only 38.5 degrees, down from 31 degrees. It's quite amazing that if he spends an hour in a room at 100 degrees, he gets just over 7 degrees.

By comparison, the rubber koozie was 50 degrees and the control was already at 63.2 degrees. This is 11.5 and 24.7 degrees higher than the Yeti, respectively. And no, the Kolster didn't sweat at all (although the regular koozie didn't either). By the end of the second hour, the results were even more dramatic. Keeping it cool means retaining more of the carbonation in your Colster.

Test #2: Glass bottle at room temperature

In the glass bottle test, things were a little more benign. I grabbed three 12-ounce glass bottles of Juice Squeeze (don't ask) and soaked them in an ice bath for a few hours. The room I was in was between 69.5 and 72.5 degrees Fahrenheit. We then followed the same testing procedure as for canned beer. Although less extreme, the results were essentially the same.

Control was the clear loser here, but it was definitely a close battle between Yeti and Koozie. The biggest difference was at 45 minutes, when the Yeti rose to 45.1 degrees Fahrenheit, the Koozie rose to 49.0 degrees Fahrenheit, and the control rose to 56.4 degrees Fahrenheit. Again, fewer extreme conditions and fewer extreme outcomes. He won't notice the difference in 4 degrees while drinking beer unless he actively looks for them and compares them. Still, the Yeti was the clear winner.

One thing to note is that while 12-ounce cans fit perfectly in colsters, beer bottle shapes and sizes vary considerably. Most of his 12-ounce bottles we tried at the liquor store were on the skinny side, creating space between the bottle and the yeti wall that would rattle and almost certainly reduce efficiency. Also, while you can attach a 16-ounce can to a colster, you can't put a cap on it, which is still less efficient. It didn't fit very well in a regular koozie either. Forget about 22.


This baby works as advertised. The cold can stayed very cold and I didn't sweat or get cold hands. You can also use it as an insulated tumbler and pour whatever you like into it, hot or cold.

The downside is that it's expensive, around $30. Sure, it performs better than a regular koozie, but a regular koozie probably would have been free too. Is it worth it? I mean, look, it's pretty awesome. It does exactly what you set it to do and looks great while doing so. But it's pretty hard to justify spending $30 on something that's commonly gifted. So here I've created a really crappy flowchart to help you with your decision making.

Understood? wonderful. enjoy.

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