Using this Giro Scamp II kids' helmet is a breeze. First, put the helmet on your child's head. Then, use the Roc Loc Junior fit system to adjust it until it fits snugly but comfortably. Make sure the helmet sits level on the head and covers the forehead. When your child is riding, always ensure the chin strap is fastened properly. As for maintenance, use a mild soap and water to clean the helmet's exterior and pads. Let it air - dry completely before using it again. Never use harsh chemicals or abrasive materials as they can damage the helmet. Check the helmet regularly for any signs of wear or damage, and replace it if needed to keep your child safe.