Name1.61 Aspheric Coating Resin Lens Refractive Index1.61 Lens Material Imported Resin Diameter70/72mm CoatingGreen FunctionRadiation Protection, Anti-fatigue Place of OriginDanyang, Jiangsu Characteristics1)More clear: Special coating process for perfect and comfortable visual effect. 2)More relaxed: You will feel more light and soft when you wear aspheric lenses. 3)More Natural: Less visual illusion and more actual visual effect is for aspheric lenses; The higher refractive index is, the better the transmittance is, the harder & thinner the lenses are.