Using these sunglasses is easy. Just put them on your face like you would with any other pair of glasses. They're great for outdoor activities like walking, driving, or spending time at the beach. When it comes to cleaning, use a soft, lint - free cloth to gently wipe the lenses. Avoid using harsh chemicals as they can damage the acetate lenses. When you're not using the sunglasses, store them in the provided case to prevent scratches and damage. Make sure to keep them away from extreme heat and cold, as this can affect the metal - plastic hybrid frame. Also, be careful not to bend the temples too much, as it might cause them to break. Enjoy your stylish and protective sunglasses!