Using the Hale bike helmet is a breeze. First, adjust the Roc Loc Sport fit system to get a comfortable and secure fit on your child's head. Make sure it's not too tight or too loose. The detachable visor can be put on or taken off according to your needs, like when it's sunny or you want a more streamlined look. When riding, always ensure the helmet is properly fastened. As for maintenance, you can use a mild soap and water to clean the helmet. Avoid using harsh chemicals as they may damage the helmet. Store the helmet in a cool, dry place when not in use. Check the helmet regularly for any signs of damage, such as cracks or loose parts. If you find any issues, replace the helmet immediately for your child's safety.