Last I checked, they don't use bicycle safety helmets for treatment - I've seen the plagiocelpaly helmets, these were just standard ride the tricycle helmets. I honestly figured they had just ridden bikes to the market (not unheard of in my area), but the family got into the SUV parked next to my car as I was leaving.
Bike helmets? That is funny. But maybe it was just easier to let the kids wear their brand-new helmets (or whatever) than argue about it. I have done that before — let the kids wear their rain boots when it wasn’t raining, or something like that, just ‘cause I was too darned tired to argue anymore. :)