Polarized lenses are made specifically to protect your eyes from harmful ultraviolet rays and glare, and these nice sunglasses by Nitrogen have that and more. The frame is made of plastic, strong and durable, molded to fit your head comfortably. The arms come straight off the temples and taper back to the two-toned earpieces. The Nitrogen logo is seen proudly on the side in silver letters. The lenses are rounded rectangles with padded nosepieces in the middle for better grip.