Using your MET Roam MIPS helmet is easy. Just put it on your head and adjust the straps so it fits snugly. Make sure it sits level on your head, covering the top and back. When you're riding, always wear the helmet properly. Don't take unnecessary risks by not using it. For maintenance, clean the helmet with a mild soap and water solution. Avoid using harsh chemicals as they may damage the helmet. After cleaning, let it air - dry. Check the helmet regularly for any signs of damage like cracks or dents. If you notice any, it's time to replace the helmet for your own safety.