Vipop’s designer eyewear is crafted from stainless steel, titanium and premium CR39 mirror lenses. The best way to care for your eco-friendly sunglasses for maximum wear life is to store them in a hard glasses case to prevent scratches, cleaning them every day or weekly with mild dish detergent (don’t forget the nose pads, where bacteria and dead skin accumulate), and drying using a clean microfiber cloth.