It's easy to imagine Clark Kent in these endearing Nerd glasses. The all-black or tortoiseshell glasses are complemented by rectangular frame, a pair of molded nose pads and slim arms that taper into the earpieces. Metal diamond embellishments at the temples keep these glasses from becoming boring. Rather, these exude an air of professionalism and elegance. Slip these on when you want to look like the expert your customers can trust.