To use these sunglasses, simply put them on your face like you would with any regular pair. They're great for outdoor activities, protecting your eyes from the sun while making you look fashionable. When not in use, keep them in a hard - case to prevent scratches. Clean the lenses with a microfiber cloth and a little bit of lens cleaner. Avoid exposing them to extreme heat or cold, as this can damage the frame and the lenses. Also, be careful when handling the rhinestones to prevent them from falling off.