Frame Material: Cosmos Tortoise features a dark, spellbinding acetate blended with gold tortoise, handmade from zyl acetate.| Hardware: Five barrel hinges. | Lens: Dark smoke CR-39 lenses manufactured by Carl Zeiss Vision. Featuring 100% UVA/UVB protection and 4 base curve. | What's In The Box: Includes a premium hard sunglass case and custom printed polishing cloth.