To use these frames, simply place them on your nose and adjust the temples to fit comfortably around your ears. When taking them off, hold the frames by the temples and gently lift. As for maintenance, clean the lenses regularly with a soft, lint - free cloth. Avoid using harsh chemicals or abrasive materials, as they can damage the acetate. Store the frames in a protective case when not in use to prevent scratches and other damage. Also, if the spring hinges start to feel loose, it's best to take them to a professional for adjustment.