For Running: Rudy Project Proflow

Made from a mix of carbon, plastic, and an aerospace-grade aluminum composite, the 1.2-ounce Proflow shades are so light, they're unnoticeable. And thanks to a unique design that puts most of the weight near the temple, they're well-balanced and secure. Ample vents nixed fogging during sweaty runs, while a number of adjustable parts let you fine-tune fit. [$350; e-rudy.com]