Channel executive-level style and see better with these suave reading glasses featuring smart CR-39 lenses for superior clarity. 51mm lens width; 18mm bridge width; 144mm temple length CR-39 lenses Acetate Imported <a data-cke-saved-href="http://i.nordstromimage.com/images/default/shop/image/shops/womens-sunglasses/2013/0304/Nordstrom_Reading_Glasses_Strength_Guide.pdf" href="http://i.nordstromimage.com/images/default/shop/image/shops/womens-sunglasses/2013/0304/Nordstrom_Reading_Glasses_Strength_Guide.pdf" target="_blank">What's Your Magnification Strength?</a>