How good is the world’s most expensive fighter-jet helmet?

“IN THIS style, $400,000.” That price tag for a hat sounds like something out of a tea party attended by Alice. It is actually, though, the expected cost of the world’s most high-tech helmet—one to be worn by pilots of the Lockheed Martin Lightning II, also known as the F-35, which has been developed by America and its allies to replace most of their existing strike aircraft.

See the full article at economist.com