They don’t call these the dog days of summer for nothing. At least I’m pretty sure they don’t. Regardless, now more than ever, you need clothing that works with you during the heat. The Columbia Sportswear Omni-Freeze shirt ($60) is totally on your team with its wicking polyester base embedded with thousands of 0.15-inch hydrophilic polymer rings. Those rings absorb sweat and expand, letting your body heat escape faster. So if the question is WHO LET THE HEAT OUT?? The answer is the Columbia Sportswear Omni-Freeze shirt.