How to use: Simply put on the sunglasses to block sunlight and glare, perfect for outdoor activities like driving, hiking, or beach vacations. Note: Avoid scratching the lenses by not placing them face - down on hard surfaces. Don't expose them to extreme temperatures for a long time as it may damage the frame and lenses. Maintenance: Clean the lenses with a soft microfiber cloth regularly. If they get dirty, you can use a little mild soap and water, then dry them gently with the cloth. Store them in a protective case when not in use to prevent scratches and damage.