Using these Fender sunglasses is easy. Just put them on your face, adjust the temples to fit comfortably, and you're ready to face the sun. When not in use, store them in a hard - case to avoid scratches. To clean them, use a soft microfiber cloth. Avoid using harsh chemicals as they can damage the lenses and the frame. Don't leave them in a hot car as high temperatures can warp the frame. With proper care, these sunglasses will serve you well for a long time.