The LONGIN Gunmetal Brown glasses from Cartier Hearts are designed to be stylish and modern. They have a classic aviator shape with a metal frame and adjustable nose pads. The lenses are UV protected and come in a variety of colors. The frame also features the iconic Cartier Hearts logo on the side. They are comfortable to wear and offer great protection from the sun. Customers who have purchased these glasses have given them positive reviews, noting that they are both stylish and functional.