Using this helmet is easy. Just put it on your child's head and adjust the fit system to make it snug but not too tight. Make sure the helmet sits level on the head. When riding, always fasten the anti - pinch buckle properly. As for maintenance, clean it regularly with a mild soap and water solution. Avoid using harsh chemicals as they may damage the helmet. Check the helmet for any cracks or damage before each use. If you notice any issues, replace the helmet immediately. Keep it in a cool, dry place when not in use to prolong its lifespan.