Another stab at the bike helmet conundrum (style vs. safety). This one is pretty much unseen most of the time, as it is tucked away in a chic collar worn by the rider. An internal sensor detects sudden movement and rapidly inflates the helmet to cushion the cyclist’s head. Skeptical? Check out the video below for a crash-test-dummy demonstration. Now let’s just hope cycling neckwear doesn’t go out of style. Original article on Core77.com here.