Newman handmade cellulose acetate frames (acetate is made from cotton & wood, is eco friendly, sustainably sourced & biodegradable). S tainless steel cores for strength, flexibility and an adjustable fit. Extra sturdy and durable zinc-free barrel hinges. Optical-quality nylon lenses with 100% UV protection. Custom Brain Dead case and cloth included. Sizing (lens width - bridge width - temple length): Newman 49-25-145 mm Acetate