"Something way cooler than that, actually." Tony couldn't keep himself from puffing a bit. "Nanotech."

Words were cheap, he felt. Stepping back a few paces, Tony gestured at the arc reactor he had fitted to his new outfit (why not customize something you grow attached to, after all?) before giving it a firm pat. In a few moments time, the nanoparticles radiated out like a wave to engulf his form in a sleek, optimized version of his familiar Iron Man armor.