Nitrogen is known for style, and these cool shades for men will show you why. The frame is made of plastic with a jointed, scaled look that catches the eye and lends strength to the construction. The arms come directly off the temples and feature a two-tone blue and black look with several joined sections through the smooth taper to the ear. The Nitrogen logo is seen on the side in small raised letters. The lenses are rounded rectangles with a polarized finish that protects your eyes.