The Airman series sunglasses are handcrafted with certified Titanium eye-rim and steel cable wire in the front section and temples. Gold-plated accents elaborately welded to the front section of the eye-rim. The frame is finished in black chrome color. The cable steel wire temples are flexible and comfortable to wear. The lenses are made of poly-carbonate material which is impact-resistant, scratch-resistant and polarized. They offer above 99% protection against the harmful effects of ultraviolet (UV) radiation. Our lenses comparable to those fitted in executive level of vuarnet, persol, revo, maui jim, serengeti, oakley, zeiss, fred, cazal, silhouette, valentino, costa del mar and ray-ban sunglasses. These sunglasses are produced in limited-edition of 500 pieces and each frame is individually numbered. The sun lenses in the Airman frames can be replaced with prescription lenses by an optician, should this ever be required. All Xezo eyewear is guaranteed against all defects in workmanship and parts for a period of 3 years from date of sale.