This is the DevTac Japan &quot;Ronin&quot; helmet. Not just a show piece, this is a fully functional Kevlar level 3a bullet-proof helmet! The best part of it (for me) is that the helmet is in two halves; a backplate that&#x27;s strapped to your head, and the front section fixes in place with strong magnets. I&#x27;m in the process of finding out how much these cost, but I suspect it&#x27;ll be way out of my range.