It's a delicate subject and a complicated matter since Donnie isn't sure if he'd want his brothers tied up in all this. But at least they'd all be together...

He shakes the thought from his mind, glancing instead back to the man beside him. "It's got multiple layers to it for extra protection. The parts that protrude slightly allow for better airflow while filtering out anything potentially hazardous." At least it's easier talking about his own designs.