These Oliver Peoples Capannelle sunglasses are super easy to use. Just put them on your face like you would with any regular sunglasses. They're great for protecting your eyes from the sun whether you're walking around town or driving. When it comes to cleaning, use a soft, lint - free cloth to gently wipe the lenses. Avoid using rough materials that could scratch the photochromic lens. Keep them in the provided case when you're not wearing them to prevent any accidental damage. Also, don't expose them to extreme heat or cold for long periods as this might affect the frame or the lens performance.