Came across this video today on the manufacture of Arai helmets and thought some might like to check it out.
Although I found the bloke gushing on irritating as all hell, it's still worth a watch.
https://youtu.be/gEosbaSJK44?si=1ahRXeCQ34SmSuRvI had an Arai helmet back in the 90's and loved it, in fact I still have it.
I also have an Arai Freddie Spencer replica helmet from the 80's sitting out in the garage...
I would probably have bought another Arai but as they don't build modular helmets, I moved to a Shoei...