HIGH-TECH WORKOUT GEAR

Patagonia Air Flow T-shirt
Most base layers promise to wick away sweat, which they do — until the fabric becomes waterlogged and starts clinging to your skin. Patagonia’s new Air Flow tee is designed so that never happens. It’s knit from polyester using a painstakingly slow technique to maximize sweat-evaporating air movement across the fabric. (It’s also ultralight, at only 3 ounces.) An added bonus: The shirt offers UPF-15 sun protection and is treated for odor control, so you don’t smell at the finish line. [$59; patagonia.com]