I'm pretty convinced mips is just marketing. Hair will do the same thing. That's why in rock climbing world, petzl hasn't even bothered with it when they're usually very forward thinking about their designs (first company to do side impact testing).
Thank you for this comment. I paid a little extra to get a helmet with mips but didn’t even think about my (long) hair serving the same function.
> Hair will do the same thing.
VA Tech (and others, IIRC) has years of empirical tests that show otherwise. What is your comment based on?
Edit: In fact, if I understand your analysis, humans won't get concussions at all.
I’m bald on top
Exactly. Hair and scalp. Evolution already made a MIPS system. The thing lacking it was the test dummies that Virginia Tech uses, so now they recommend we put it in helmets too.
MIPS is increasingly common in rock helmets. Black Diamond (anecdotally the most common brand I see in the US) now has it in their higher end models, and Mammut as well.