When the trees turn to shrubs, and the shrubs turn to rocks, it's time to bust out the Sunski Treeline Polarized Sunglasses. These mountaineering-inspired shades feature polarized lenses that cut through the blinding glare coming off the snow, as well as ventilated side flaps that keep the sun from slipping in through the cracks, so you can see better when you're at high altitudes. Strap loops at the temples and grippy nose pads keep you from losing your shades when you're ripping around at the ski resort, and lightweight construction ensures all-day comfort any time you're moving through the mountains. Proposition 65 Warning for California Consumers: This product contains chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm.