
what kind of earplugs are best to protect ears against f1 noise? I have some fairly hardcore earmuffs that I wear when wielding my (air-powered) die grinder, but they have the downside of stopping me from hearing pretty much everything, not just high pitched wailing noises

my little sister (14) is going to italy on a school trip in a few weeks, and part of it involves stopping by Maranello to tour the Ferrari facilities. I don't want to risk her getting ear damage if they happen to be out testing at Fiorano, and I don't trust her school to plan for such an eventuality (if it is in fact a risk... I don't know how far Fiorano is from the rest of their facilities, but I have a recollection from somewhere that it wasn't that far)
any recommendations greatly appreciated!