Using your Nutcase Little Nutty MIPS Helmet is easy. Just adjust the grow flex fit system to get the right size for your child's head. Make sure the helmet sits level on the head and the magnetic buckle is fastened securely. When it comes to cleaning, use a mild soap and water. Wipe the shell gently and let it air dry. Avoid using harsh chemicals as they can damage the helmet. Always check the helmet for any signs of damage before each use. If it's been in a significant impact, replace it right away. This helmet is designed for kids aged 3 and up, so make sure it's used by the appropriate age group.