If you find yourself outside on those hot, humid days when having something cold to drink is an absolute necessity, the Yeti Hopper Flip 12 is your new best friend. It hangs onto ice like a dog playing tug of war with its favorite chew toy. It also hits a perfect balance where it is small enough to be carried around on most outings and even use as a lunchbox, but is still large enough to hold 12 cans and ice for those times when you need to kick back. The only real downside: it is quite pricey. If you're looking for something that fills a similar niche at a lower price point (and with correspondingly lesser insulation performance) you might want to check out the eBags Crew Cooler II.
The Hopper Flip 12 got a slight update this year. See below for more details!