This is cool - just don't ride in the rain.  cardboard bicycle helmets - able to absorb 4 times more collision force than a conventional polystyrene core helmets

Brilliant Corrugated Cardboard Kranium Helmet is 4 Times Stronger Than Polystyrene

This is cool - just don't ride in the rain. cardboard bicycle helmets - able to absorb 4 times more collision force than a conventional polystyrene core helmets

Think you understand helmets. Here is a helmet for sale in Europe that meets all European standards (same as ours here in the US). The helmet liner is cardboard.    See http://rec-law.us/RIhrxu

Think you understand helmets. Here is a helmet for sale in Europe that meets all European standards (same as ours here in the US). The helmet liner is cardboard. See http://rec-law.us/RIhrxu

The kranium handmade series

The kranium handmade series

The kranium handmade series : The number 9 Gulf Edition

The kranium handmade series : The number 9 Gulf Edition

Kranium Handmade series : Limited edition with beautiful veg tanned leather and custom stitching

Kranium Handmade series : Limited edition with beautiful veg tanned leather and custom stitching

La magia del cartón

La magia del cartón

Kranium helmet with carboard crush layer

Kranium helmet with carboard crush layer

The Kranium Evolutionary tree...Wonder what Darwin has to say about this...

The Kranium Evolutionary tree...Wonder what Darwin has to say about this...

Tour De France cyclist Mario Cippolini and the Kranium Gulf Edition

Tour De France cyclist Mario Cippolini and the Kranium Gulf Edition

D2  :  The Dual Density Honeycomb board specially designed to absorb the collision force.

D2 : The Dual Density Honeycomb board specially designed to absorb the collision force.

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