Eli Clear - Wood & Carbon Fibre GlassesThe classic square style multi layer ebony and walnut tri layer Wood3 frame and arms with black or tortoise acetate tip and 2: 3 claw spring hinges for comfort and durability. They are sold with a clear demo lens for prescription lens, the maple pin opening slot makes it easy for placement of prescription lenses. Multilayer wood frame and arms with Acetate tip Wood3 technology for durability = Wood carbon fibre wood Ethically made, recyclable