To use these sunglasses, simply put them on like you would any other pair of sunglasses. They're great for blocking out the sun and looking stylish at the same time. When you're not using them, keep them in a protective case to avoid scratches. Clean the lenses with a soft, dry cloth or a special lens cleaner. Don't use harsh chemicals or abrasive materials on the lenses. Also, make sure to store them in a cool, dry place. If you notice any damage to the frame or lenses, it's best to get them checked out or replaced to ensure proper protection and vision.