While cycling is - for the most part - safe these days, even with a helmut there are still risks.
However, a Swedish firm may have created an invention which will reduce - if not eliminate - the risk of head injury for those on their bikes.
Feast your eyes on the Hövding airbag. It's small, compact, and can be lightly carried on your shoulders.
But it has motion sensors embedded within it that track your movement. Any sharp change in momentum - like falling - and the collar inflates in a tenth of a second, covering your entire head in an impact-absorbing helmet.
Pretty cool, right? Check out the video here: