Using your MET Echo MIPS MTB helmet is easy. Just put it on your head and adjust the straps until it fits snugly but comfortably. Make sure it's level on your head and covers your forehead. When riding, always wear it properly for the best protection. As for maintenance, clean it regularly with a mild soap and water. Don't use harsh chemicals as they may damage the helmet. Store it in a cool, dry place away from direct sunlight. Check the helmet regularly for any signs of damage like cracks or loose parts. If you notice any issues, stop using it and get a new one.