Han wears this Steam Armor (蒸気の鎧, Jōki no Yoroi) in order to use his steam-based ninjutsu. Along with covering his entire body, the armor contains a furnace in its back, where the steam is produced. The pressure resulting from this emitted steam can then be used to increase the force behind Han's physical attacks. The exact amount of force produced is proportional to the quantity of steam released, as the greater the volume of steam utilized, the larger the pressure that can be built up within the armor is. For example, when a significant amount was used, just a simple kick was capable of knocking both Naruto Uzumaki and Killer B, who only caught the former, a large distance away.