Feature:1. Suitable For Color Blindness: Can easily solve color blindness problems. Allow you to perceive colors better, so you do not have to struggle with indistinguishable green and red colors.2. Double Sided Coating: Prevents glasses from being scratched. Color blind glass is nearly transparent, which enhances the light transmission and indistinguishable from normal glasses.3. Spring Hinges: Flexible, light and elastic, glasses will not pinch face with opening and closing smoothly. Suitable for most face shapes without falling off.4. Foldable Frame: With a storage box, making color blind glasses easier to carry around. Can carry with you in bag without taking any space, suit for driving and daily use.5. Long Lasting: Made of acrylic and resin, which is strong and does not break easily, with one piece nose rest, will not yellowing after long time wearing.Specification:Item Type: Color Blind GlassesMaterial: Acrylic, ResinFunction: Improves correct color recognition for people with color blindnessFrame Color: Coffee.Package List:1 x Color Blind Glasses1 x Glasses Cloth (Random Color)1 x Visual Chart1 x Glasses Case Note:1. Color blindness test picture are Chinese, you can also refer to our link picture instructions.2. Please tear off the protective film before use. 3. It is normal that lens reflection color is different due to different view angle.