X-Loop knows how to make sports sunglasses that keep your eyes safe and stay on under trying conditions. The frame on these nice shades for men is made of plastic and is molded to fit your head comfortably and stably. The arms start thick and taper smoothly, then flare at the ear. The X-Loop logo is seen on the arms against a field of silver. The lenses are set in the face in a semi-rimless style with large nosepieces for better grip.