Polarized sunglasses are ideal for outside use, as they block harmful ultraviolet rays, eliminate glare and protect your eyes. These nice shades by Nitrogen are made for men who are looking for that function, but also want to look cool and in style. The frame is made of plastic, molded to fit comfortably on your head and tough enough to be used on a daily basis. The arms taper uniformly to the ear and feature several visual sections and a two-tone silver and black look.