A helmet made out of cardboard, I know it sounds crazy, but supposedly it works. The designer behind this wonderful invention is Designer Anirudha Surabhi has invented a helmet made out of cardboard called the Kranium.

The Kranium is not only lighter but also stronger than traditional expanded polystyrene (EPS) models.

Using a material called Dual Density Honey Comb Board or D2, the liner of the helmet has been proven to absorb up three times the amount of impact of EPS helmets. Amazing!

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