XOXO Promise Iridium Black Aviator Sunglasses Grey Gradient Lens No look is too casual or too formal for XOXO Promise Iridium Black, take advantage of this durable and elegant style combined with gray gradient lens and transform any situation into a red carpet event by wearing XOXO Forum Sunglasses. These Black Promise round design combined with an exquisite design always make a great Aviator accessory! 60mm