Hövding is a Swedish company that make inflatable airbag helmets. It was started by two master’s students, Anna Haupt and Terese Alstin, as their thesis for Industrial Design. Their initial design question was if they could re-design head safety gear so that people would want to wear it whether they had to or not. Concerns regarding traditional helmets included bulkiness and inconvenience on a daily basis, along with not providing the appropriate protection against more serious accidents. By re-imagining the concept of what a protective object for your head would look like, they created the idea of an inflatable shell that would be worn around the neck and would be triggered based on sensors. An algorithm was created that would sense the differences between normal use and when the wearer is in an accident.  

http://www.hovding.com/