The designers of the invisible bike helmet.

Anna Haupt and Terese Alstin, the design duo behind Hövding, the invisible bike helmet, state on their website that they conducted a survey on why people do not wear bike helmets. 

"The instant we heard the word 'invisible,' we realised that was what the world was waiting for. An invisible bicycle helmet," they said on their website.

Hövding is a collar for bicyclists, worn around the neck, that contains a folded up airbag that deploys only on impact during an accident. The airbag is triggered by sensors which pick up the abnormal movements of a bicyclist in an accident. Shaped like a hood, it surrounds and protects the bicyclist's head. 

According to Mother Jones, the Hövding is only for sale in the European Union. It needs to be replaced after it has been "in use" and is not cheap- costing almost 4,000 Swedish Krona (about $600).

One of its features is a black box that records 10 seconds of data on the bicyclist's movement patterns during (and just before) a cycling accident. The designers are asking for customers who have been involved in an impact or accident to send their black boxes for development purposes.

See more relevant stories on bicycles:

CicLAvia Changes Date, Route for October Event

LA, Metrolink Work Toward Bike-Friendly City

Reach Staff Reporter Tricia Tongco here and follow her on Twitter.