Glasses developed by By City combining the latest anti-fog technology and double glass keeping the classic style in mind. Color: Brown CHARACTERISTICS: They provide a wide vision. Adjustable strap with non-slip silicone inserts. Lens retention system that offers a firm and secure grip. Double Crystal. Triple layer foam for optimal comfort. Lens with anti-fog treatment for clear vision in every situation. It has an air intake system that controls the formation of humidity inside. One size.