blue light filter computer reading glasses uv420 protection readers for women and men (clear) without magnification cessblu <b>features</b><br>frame material: plastic<br>lens width: 1 7/8"(48mm)<br>frame width: 5 1/8"(130mm)<br>lens height: 1 7/16"(37mm)<br>frame height: 1 5/8"(41mm)<br>bridge (dbl): 5/8"(16mm)<br>temple length: 5 5/16"(135mm)<br>spring hinge: yes<br>lenses: aspheric<br>head size: narrow <br>rx-able frame:yes<br><br><b>care</b><br>to avoid damage, never clean your eyeglasses with paper towels or clothing or alcohol, and also avoid using household detergents or soaps. while a few mild soaps don't harm lenses, today's extra strength soaps are powerful enough to slowly disintegrate lens coatings.<br><br><b>kindly notice</b><br>please ensure that the frame size is fit for your head before your pay.