Feature: 1. Good Light Transmittance: Color blind glasses has double sided coating, good light transmittance, similar to sunglasses, so it is difficult to distinguish them from normal glasses. 2. Lightweight: Color blindness glasses is very flexible, lightweight, elastic, not easy to pinch the face, open and close smoothly, suitable for various face types. 3. Fashion Appearance: Color blindness correction glasses has double beam frame type, light glasses legs, flexibility and elasticity, which makes you more attractive. 4. Application Usage: Lightweight color blind glasses can solve the problems of unsafe driving, affecting the progress of art hobbies and IT industry work, and being unable to distinguish color data. 5. Multiple Materials: Red green blind glasses is made of stainless steel and resin, which is durable and has a long service life, and can be used for a long time. Specification: Item Type: Color blind weakness glasses Material: Stainless steel, resin Function: Improve correct color recognition of people with color blindness and color weakness.. Package List: 1 x Color Blind Glasses1 x Glasses Cloth1 x Detection Picture1 x Storage Box Note: 1. The color blindness detection picture is in Chinese, and you can also refer to our linked picture instructions.2. Please tear off the protective film before use.3. It is normal to observe the lens from different angles, and the color reflected by the lens is different.4. The color of glasses cloth is random.