Optic Nerve Emergo 2.5 Sunglasses The durable TR90 frame insures that the glass always fits snug, comfortable and secure 100% UV Protection to protect your eyes from harmful UV light Polarized lenses have an invisible horizontal filter integrated into the lens which is designed to eliminate reflected [or polarized] light A universal fit and complimentary style that's a natural for medium to larger face shapes Limited Lifetime Warranty