Transformers Sunglasses feature cutting edge technology, the most advanced construction techniques and virtually indestructible materials, A perfect blend of form and function, these shades offer beauty and style, but remain one of the most durable protective tools for your eyes on the market today, Hand machined, aircraft aluminum frames, Impact tested lenses won"t give out under pressure, Quality T-6061 Billet Aluminum, Light adjusting lenses - darken as light increases, Item Color:, Warranty: 4 Year SKU: DFDRW222