Polarized lenses are excellent for protecting your eyes from dangerous and damaging ultraviolet rays, and these shades by Khan for men offer this protection and a whole lot more. The frame is strong plastic, made to fit your head comfortably, and rigid enough to stand up to everyday use. The arms feature an indented alley where the Khan logo rests. The arms curve slightly and taper down to the earpieces. The lenses are rectangular in shape with rounded edges.