If he was ONLY wearing the plate, meaning no Kevlar or porcelain around it, it literally might not be wide enough to cover his nipples.

Without porcelan and anti-spalling material around the plate, I would say it could make lethal injury from bullet spall much more likely.

If he was ONLY wearing the plate, meaning no Kevlar or porcelain around it, it literally might not be wide enough to cover his nipples.