Using this Nutcase Little Nutty helmet is easy. First, adjust the grow flex fit system to get the right size for your child. Make sure the helmet sits level on the head and the straps are snug under the chin. The no - pinch magnetic buckle makes it simple to fasten and unfasten. When your child is out and about, whether riding a bike or doing other sports, the helmet will protect them from impacts thanks to the MIPS and EPS foam. As for maintenance, you can wipe the helmet with a damp cloth to keep it clean. Avoid using harsh chemicals as they might damage the shell. Check the helmet regularly for any signs of wear and tear, like cracks or loose parts. If you notice any issues, it's time to get a new one to ensure your child's safety.