There's a reason athletes like ski racer Julia Mancuso and big-mountain skier Jeremy Nobis wear Kaenon sunglasses: They're stylish yet technical enough for sports. The Gauge features Kaenon's polarized, proprietary SR-91 lens material (which is lighter and has better clarity and polarization than polycarbonate lenses), which is why you'll have to fork over $218 for them, but we promise, it's worth it. Buy now from Backcountry.com.