"Optic Nerve® Alpine Polarized Sport Sunglasses: The Optic Nerve® Alpine Polarized Sport Sunglasses are unisex sport sunglasses built for outdoor activities where glare management matters - think trail running, skiing, cycling, and time on the water. Polarized lenses filter out 99.9% of reflective glare caused by sun, snow, and surf, so visual clarity stays sharp across changing terrain without constant squinting. The narrow fit makes these sunglasses a strong choice for athletes who find standard sport frames too wide, and the lightweight polycarbonate construction keeps them comfortable during extended wear.The acetate lenses meet ANSI Z80.3 impact-resistance standards and block 100% of harmful UV rays, which means your eyes stay protected throughout the activity - not just in direct sunlight. A four-point frame design distributes weight evenly across your face, keeping the fit balanced and secure without slipping during faster efforts. The Dark Demi frame paired with Polarized Brown lenses enhances contrast in variable light conditions, making it easier to read terrain on the move.Why Our Fit Experts Love It""I wore the Alpine Polarized Sport Sunglasses on a bright morning trail run where the sun was hitting the path at a low angle. The polarized lenses cut the glare immediately, and the narrow fit stayed secure the entire time without any slipping."" - Michael, Road Runner Sports Fit Expert, Seattle WAWho It's Best ForThe Optic Nerve® Alpine Polarized Sport Sunglasses are best for outdoor athletes and active individuals who need reliable glare reduction and UV protection during trail running, snow sports, cycling, or water activities. If you find standard sport frames too wide, the narrow fit makes these sunglasses a natural choice. VIP Family members can take the Alpine Polarized Sport Sunglasses for a 90-Day test drive with our Perfect Fit Guarantee."