The Brain Dead Elia sunglass frames in Black Sparkle are handmade in cellulose acetate (acetate is made from cotton & wood, is eco friendly, sustainably sourced & biodegradable). Stainless 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.