My own understanding is weight is probably more important than a MIPS-style system. I couldn't find it, but I'm sure one of the motorcycle websites quantified the difference a 100g weight difference makes at different speeds and it was substantial. Again more in relation to motorbikes but I find I suffer much less fatigue over a long period with a lighter helmet. But it's a complex topic because I'm sure Bell would argue the extra weight of their helmet has added safety through their choice of materials. But all things being equal, particularly for a kid's head I would always go with the lightest possible helmet.
Feb. 20, 2023, 4:20 a.m. - Briain
My own understanding is weight is probably more important than a MIPS-style system. I couldn't find it, but I'm sure one of the motorcycle websites quantified the difference a 100g weight difference makes at different speeds and it was substantial. Again more in relation to motorbikes but I find I suffer much less fatigue over a long period with a lighter helmet. But it's a complex topic because I'm sure Bell would argue the extra weight of their helmet has added safety through their choice of materials. But all things being equal, particularly for a kid's head I would always go with the lightest possible helmet.