Lens curvature does not exist a large part of the difference;
Features: 100% Brand New and High Quality; Light weight and high strength impact resistance; For the best outdoor sports lens material; UV400 safety lens; Not easy to be broken, crack or rust; Prevent from ultraviolet light; Lens curvature does not exist a large part of the difference; No distortion and dizziness; Lens Material: Plastic Frame Material: PC Lens Color: Gold Mercury/ Transparency/Dark Brown/Full Gray/Night Vision/ Red Mercury Size: Lens Width:76mm Lens Height:43mm NoseBridgeWidth:16mm Templelength:121mm Whole Length:148mm Note: Please allow 1~2cm deviation of manual measurement, thanks! Package Included: 1 x Cycling Goggles