To use these sunglasses, simply open the arms and place them on your face. Make sure they fit comfortably on your nose and ears. When not in use, store them in a protective case to prevent scratches. Clean the lenses with a soft, lint - free cloth to keep them clear. Avoid exposing them to extreme heat or direct sunlight for long periods, as this may damage the metal frame. Also, don't bend the arms forcefully as it could break the frame.