Features: 1.Filter the overlapping part of the spectrum seen by red?green blindness through an optical filter, change the spectral components, so as to make the color?blind person's color resolving ability. 2.There is a special coating on the lens that can filter the light reaching the wearer's eyes to filter the light of a specific band, so that the colors seen are brighter and more saturated, thereby enhancing the color effect. 3.It can effectively improve the user's color vision and color resolution. The brain distinguishes the effects of red and green colors by analyzing and comparing the color difference of the objects seen by the eyes. 4.This color blind glasses is extremely suitable for color weak, color clindness people, very practical to use in daily life. 5.With the use of TR90 frame, scetate fiber and resin sheet material, ensuring the reliability of the glasses. Specification: Item Type: Color Blind Glasses_x005F_x000D_ Material: TR90 Frame + Acetate Fiber + Resin Sheet_x005F_x000D_ Usage: Color Weak, Color Blind People PackageList: 1 x Color Blind Glasses 1 x Glasses Cloth 1 x Bungee Cord 1 x Glasses Case