How to use: Just put on the sunglasses like you would with any other pair. Adjust the nose piece to fit your nose comfortably. When riding, the wide - angle visibility will give you a great view of your surroundings. Note: Avoid scratching the lenses. Don't expose the sunglasses to extreme temperatures for a long time. Maintenance: Clean the lenses with a soft, microfiber cloth. You can use a mild lens cleaner if needed. Store the sunglasses in the provided case when not in use to prevent damage.