Polarized Classic Square Aviator Sunglasses - Nickel Plated Metal Resin frame Composit lens Polarized Lens width: 60 millimeters Lens height: 47 millimeters Bridge: 21 millimeters Arm: 138 millimeters Increases visual comfort. Our ploarized lens technology is designed to eliminate reflective glare and to protect against harmful UVA and UVB rays Enhances visual clarity and contrast when exposed to reflective objects such as sunlight, water, snow, pavement, sand etc. Reduces eyestrain and eye fatigue by eliminating the frequent adjustments that the eyes must make when exposed to changing glare intensities. Conveys colors faithfully by passing light through 7 layers of filtration Precision - Decentered Lenses. By shifting the lens focal point from the geometric center to a point along its radial curve that serves as the optical center, our lenses offer clear-wrap frame styles while maintaining optically perfect, distortion-free vision Lens width: 60 mm, Lens height: 47 mm, Bridge: 21 mm, Arm: 138 mm