Keyhole frames add to the fun, retro look of lightweight reading glasses made with stainless-steel hinges for durability. 46mm lens width; 23mm bridge width; 140mm temple length Acrylic/stainless steel Imported <a 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> Men's Furnishings