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Aug. 24, 2015, 1:58 p.m. -  thatguy

#!markdown Some good real world evidence that the safest helmet shape would be the one which wraps over the occipital lobe, past the cerebellum, and protects the brain stem would be great. However, I think that any helmet company who sells both XC and AM helmets would not do themselves any favours by pitching the actual scientific evidence behind one shape being safer than the next. I'd recommend that anyone who is concerned about the level of protection their XC/Road race helmet is giving them just have a look at the human brain and draw a line where they think the eps foam should end…then you will have your answer. If that doesn't convince you, have a look at football, and hockey helmets (often made by the same companies) shape their eps protection. No doubt, mountain bikers would not wear a hockey helmet…but as helmets evolve you can see that they are becoming very similar in shape for a very important reason.

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