Sunglass by day, grow glass by night. This USA made HPS lens is a proprietary polycarbonate blend that allows it to transition from the signature blue of our HPS color-balancing technology to a dark grey tint when exposed to direct sunlight. Transition is activated by direct sunlight and darkens fully within a few minutes. 
Experience balanced color and protect your eyes for hours of comfort and enjoyment, wherever the day takes you.
The Italian built Coup frame has concealed flex hinges and fits average sizes faces for both men and women.