Key features: Frame made of cellulose acetate. Aviator frame. Lenses Include: Lenses certified ISO, IAF, and KAB MC 04. Lenses prepared, cut, and hand-checked in our workshop. Frame delivered with two lens colors, easily interchangeable at your local optician or in any Jimmy Fairly store: Orange lenses are category 1: protect against glare in cloudy conditions or indoors. Grey lenses are category 3: protect against glare in sunny conditions. All our lenses provide 100% UVA and UVB protection. Possible lens configurations: polarised lenses, prescription lenses, coloured lenses in 10 available colors.