AV545Lithe and slim, these flexible and comfortable aviator sunglasses are made by Air Force for men and women who want to look good and not stress about it. The frame is made of metal, flexing and bending as needed to hold its shape. The arms are slim and straight with a full coating around the ear for better grip. The lenses are round with a dark finish that blocks the sun set between a double bridge structure for strength and silicone nose pads for fit.