?Service?We strive to provide you high quality product and satisfied service. If you have any opinions on our product, please feel free to contact us. We are willing to improve with your comments.No risk to try!. ?Size?Lens width:52mm(2.05inch),Lens height:41mm(1.61inch), Bridge width:15mm(0.59inch),Arm length:140mm(5.51inch). ?Metarial and Design?Light weight TR90 frame with anti-scrached PC lens,duarable metal hinge provide you comfort fit.Classic design shine you style out. Best Gift for your eyes' health!. ?Relieve Eye Strain and help Sleep Better?Reduce eye fatigue,headache, blurry vision caused long time exposion to blue light ray, protect eyes from UV and Glare. ?Madison Avenue Blue Light Blocking Lens? Filter high level blue light from digital screen of computer, phone and TV,maintain HD clear vision with less color distortion. The original non-prescription lens can be replaced with your other lens at any optical store.