Fitovers Sunglasses Classic Sport - Virtually indestructible memory nylon frame. A removable brow bar prevents light entering from above and aids in the Fitovers "float factor" a feeling that the Fitovers are literally floating above your prescription frame. Scratch resistant & distortion free polarized lenses. ANSI Certified. 100% UV Protection. 1 Year Warranty. Removable brow bar provides a complete seal against wind, dust and sunlight; offers maximum protection while allowing you to pursue your sporting activities with confidence. Hypoallergenic nylon frame with removable forehead (provides seal for sporting activities). Extremely lightweight frame for optimum comfort provides wrap around protection. Polarized side lenses (provides ultimate protection from glare). Premium polarized lenses featuring Duo Hard Coat contain multiple scratch resistant treatments protecting your lenses for years to come! PDX Gray lenses maintain True color definition regardless of varying light. Transmitting all colors equally, PDXTM Amber lenses Increase contrast, providing greater depth perception in situations where visual acuity over long distances is required, like tennis, golf, shooting, or any other outdoor sports activities that are subject to varying light conditions. PDXTM Amber polarized lenses are ideal for lower light situations, like fishing in the late afternoon or early morning.