These stylish sunglasses contain no harmful BPA. The frames are flexible and highly impact-resistant. The decentred lenses have a mirror coating (category 3) and are made of CX material. The frame is nickel free, the screws are made of stainless steel. Throw these glasses on for your next adventure. Reyes Cx Sinner Sunglasses Sport Cx CX: Environmentally friendly, produced frame and lens BPA FREE Decentred lenses made from CX material 100% UV protection Changeable lens system Anti-slip temple tips and nose pads Lens Category: Cat. 3 Lens Technics: Oil lens