Rudy Project SIRIUS Matte Black Sunglasses with photochromic light-reactive lenses. Photochromic ImpactX2 Black Lens. Transmits 75% of light when faded and darkens to 9% light transmission when fully activated. This frame will best suit a head circumference of about 57-62cm. Supplied with soft pouch case, user guide & original shipping box. Frame code: SP87..06 Ships from UK. International delivery available. My ref. HG4