Kate Spade Alora prescription sunglasses are made of extremely lightweight acetate. The acetate composition provides a superior combination of strength, flexibility and comfort. This model features flashy and unique styles that blend fashion and fun. The distinctive temples feature alternating styles on the inward and outward facing angles. The Kate Spade New York carrying case and a cleaning cloth come with the Kate Spade Alora prescription sunglasses. If you have any questions just contact a certified SportRx optician, and they'll gladly help you!