I bought a pro tec.
Good helmet, looks good but I came in after my first few hours using it and the strap had cut into me.
Not sure if this is because I have beautiful soft skin

but when I turn my head the strap rubs on my chin.
Tried it with no strap and it just falls off when you stack
Any way my point is to consider a helmet that doesn't need a strap like a good surfing helmet