Features: Improve Color Resolution:A special coating on the lens filters out certain wavelengths of light allowing colorblind people to improve their color resolution. Upgrade Coating: Upgraded double-sided coating good light transmittance high-definition resin original material lens good clarity. The color of vacuum coating is enhanced and the multi-layer coating superposition process is only for better effect. Functional:These color blind glasses help you see colors clearly reduce distortion and increase the contrast of all colors. Improve color blindness and color weakness. Widely Applicable:Additional luminosity suitable for both colorblind and nearsighted people. After Sale Customer Service: If you have any problems about our products please feel free to contact us we are ready to help. We will solve your problems as soon as possible. Specification: Material: PC resin Lens Width: 64 mm Nose Bridge:16mm Width: 139 mm Length: 144 mm Height: 45mm Weight: 19g Notice: 1. Due to different monitors and lighting effects the actual color may be slightly different from the image. 2. Due to manual measurement please allow 1-3mm deviation. includes: 1Color Blind Glasses OR 1Color Blind Glasses 1Mirror Cloth 1Mirror Box 1Detection Card "