Hosted on MSN2mon
From using plant rinds to high-tech materials, bike helmets have improved significantly over the past two centuriesAll these materials are much harder and still ... The initial concept for the halo helmet used a simple leather strip wrapped around the forehead. But these halo helmets quickly evolved, as ...
Hosted on MSN2mon
From using plant rinds to high-tech materials, bike helmets have improved significantly over the past 2 centuriesAll these materials are much harder and still ... The initial concept for the halo helmet used a simple leather strip wrapped around the forehead. But these halo helmets quickly evolved, as ...
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