Features： 1、High Transmittance: Upgraded double sided coating, good light transmission, similar to sunglasses, to avoid dissimilarity, difficult to distinguish is color blind glasses. 2、Flexible and Lightweight: Flexible and light elastic, not easy to pinch the face, open and close smoothly for a variety of face shapes to wear, not easy to fall off, easy and comfortable! 3、Durable Material: This colorblind glasses is made of resin and alloy material with ultra light and durable alloy TR90 frame, which is suitable for both men and women. 4、Easy to Carry and Clean: This color weakness glasses with glasses case and glasses cloth, very easy to carry out and use, dirty is also easy to clean up. 5、For Outdoor and Indoor Use: All of our glasses are designed specifically for bright environments, helping to solve problems such as solving driving trips and art hobbies. Specification： Item Type: Color blindness glasses Material: TR90, alloy Function: Improve color blindness and color weakness people to correctly identify colors Size: Nose Spacing: Approx. 15mm / 0.59in Lens Width: Approx. 57mm / 2.24in Glasses Leg Length: Approx. 146mm / 5.75in Frame Height: Approx. 34mm / 1.34in Total Width of Frame: Approx. 140mm / 5.51in Package List： 1 x Black Frame Glasses 1 x Glasses Case 1 x Glasses Cloth 1 x Inspection Chart