Using this Iron Man Mark LXXXV helmet is a breeze. First, insert 2 x 1.5V AA alkaline batteries (not included) into the designated battery compartment. Once the batteries are in, you can turn on the LED light - up visor. There's a dimming setting, so you can adjust the brightness according to your preference. Put on the helmet and enjoy the role - play. The adjustable padding inside ensures a comfortable fit for most head sizes. When it comes to maintenance, keep the helmet in a dry place away from direct sunlight. If it gets dirty, you can use a soft, dry cloth to gently wipe it clean. Avoid using harsh chemicals or abrasive materials as they may damage the helmet's finish.