Now the padded inner lining is velcro-attached, so workers can adjust it about as easily as they would a bike helmet.

ENGADGET

And for those cyclists who want to be safe but can't stand to be seen wearing a helmet, the world's first "invisible" bike helmet is now for sale.

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Rain began to drip through my borrowed bike helmet.

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And these can be used for far more than just 3D images taken as the Concept GLA drives along: the HD cameras can be removed and, for example, fitted to a mountain bike helmet.

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Bring your bike, your helmet, and most importantly, your courage.

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In the fiercely conformist world of professional sport, Wiggins, a self-styled mod, has always cut an idiosyncratic figure, discreetly customizing his Team GB cycling helmet and bike with the Royal Air Force roundel co-opted by The Who as a symbol of the musical subculture in the 1960s.

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Listen to turn-by-turn directions from the inside of your motorcycle helmet, check your trail map from the handlebars of your mountain bike, plot your chart and find fish on your next boating trip, or steer clear of lightning strikes when flying your jet.

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