Features: Blue Light Blocking: Our glasses can effectively block mobile phone computer LED blue lights which will cause sore swollen itchy eyes dry eyes easy fatigue decreased vision and eye damage. Premium Quality: The glasses are made of PC material the lens has an easy-to-clean film and an anti-blue light coating which can effectively protect against UV rays and harmful blue-violet light. Ergonomic Construction: Flattering lines create aesthetically pleasing frame appearance and ergonomic construction provides the best wear feeling and all-day comfort. Wide Compatibility:Our glasses with spring hinge frame and intigrated nose pads can adapt to most face and nose shapes durable for long-term use. Classic rectangular half frame design suitable for men and women. 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 Glasses Total Width:142mm Glasses Leg Length: 145mm Mirror Height: 47mm Single Lens Width:57mm Nasal Spur:20mm Weight:16g 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: 1*glasses "