Whoa, there is a huge difference between "not specifically designed to protect against" and "does not protect against". A bike helmet is not specifically desig

Whoa, there is a huge difference between "not specifically designed to protect against" and "does not protect against". A bike helmet is not specifically designed to protect against a brick falling from a building and hitting your head. But would you rather experience such an event with a bike helmet, or without? Also you should take any article singing the praise of MIPS for regular bike helmets with a huuuge grain of salt. MIPS as it's been designed and tested for motorbike/downhill racing/etc. is a definite advantage. But those are all systems where the helmet is so tight it's almost glued to your head. And if you look up the research papers on MIPS, they use test stands with a crash test head and literally glue the helmets to the head before testing. A bike helmet is so far from firmly attached that the 10-15mm rotational slip offered by MIPS is obviously pointless.