Material: Bio Acetate (Lenses are changeable) Color: Black Lenses: Gray New Generation of lenses with 9 layers of protection. - 2 layers scratch-resistant, - 2 layers shock-resistant, - 4 layers of UV400 protection (maximum UV protection) and - 1 main layer polarized). Includes: - Tri-fold sustainable cork sunglasses case - A microfiber eco friendly sunglasses cloth - A linen sustainable sunglasses bag - 2-year guarantee All of our models are handmade, polarized, and eco-friendly. The raw materials used to make our products are either recycled or FSC certified. We use a carbon-neutral shipping company. We also plant 3 trees + remove 1kg of plastic for every order, so we can offset any carbon footprint there is left behind.