Features 1. ANTI BLUE RAY: glasses can reduce harmful blue rays to relieve eye fatigue, dryness, and decreased visions, protect your eyes from daily life and electronic products. 2. LIGHTWEIGHT COMFORTABLE: The eyewear frame is durable and not easy to break, adjustable nose pads and spring hinges, you can hardly feel them on your face. 3. CIRCULAR RETRO FASHION: Classic circle frame fit various face, trendy vintage style design makes you look professional and stylish when working or reading. 4. REDUCE EYESTRAIN: Prolonged exposure to blue light will slowing or stopping the production of melatonin, causing sleep disorders. Blue light shield can stop it and provide you with a better night's sleep. 5. PRODUCT SIZE: Lens Width: 52mm(2.04 inch), Lens Height: 50mm(1.96 inch), Nose Width: 20mm(0.78 inch), Frame Width: 133mm(5.2 inch), Leg Length: 143mm(5.6 inch). Specification Material: Metal Color: Green, Rose gold, Silver, Black Size: Lens Width: 52 mm, Lens Height: 50 mm, Nose Width: 20 mm, Frame Width: 133 mm, Leg Length: 143 mm Weight: 21 g Package Include: 1 Glasses Frame(Without Box)