The Yeti Hopper Flip 12 is your new best buddy and our Top Pick for a Personal Cooler if you frequently find yourself outside on hot, muggy days when having something cold to drink is a must. It strikes the ideal size-capacity balance, being small enough to be carried on most outings and even used as a lunchbox while still being big enough to carry 12 cans and ice for when you need to relax. It holds ice for right at 24 hours. The only significant drawback is the high cost.