He moves to Steve's left side, unthinking, as though he'd never been anywhere else, and walks with him back into the main lab. T'Challa turns to look at them, and his eyebrows rise slightly before he gives a sharp nod.

"I see my sister has been busy. Good." He beckons to one of the technicians, who brings over an oddly-shaped package that she holds out to Steve as T'Challa continues. "She made this for me a couple of years ago, after seeing news coverage of Captain America -- it does not work well with the way I fight, but I think you might find it useful."