How to use: Put on the Bell K.1 Pro helmet like you would any regular helmet, making sure it fits snugly on your head. If you're using it in an open wheel configuration, attach the air intake (sold separately). For closed car use, insert the top forced air insert (also sold separately). Note: Always check the helmet for any visible damage before each use. Don't use it if there are cracks or other signs of wear. Maintenance: Clean the helmet regularly with a mild soap and water solution. Avoid using harsh chemicals as they may damage the helmet's material. Store it in a cool, dry place away from direct sunlight.