Metal lens: Hard coating acrylic. Clear tip. Made to MIL-STD 105, military standard 105. Impact resistant. US Air Force Style aviators. GI Government Issued style. 58mm lenses. Acrylic lenses. UV 400 protection. Bayonet temples. Brown frame. Gold colored lenses. Includes black case. Extremely stylish and comfortable. Unisex. Brown frame/gold lenses - 58mm pilot aviator sunglasses - w/case.