Helmet tyeps depend on the event. Like the jumping are strapped on and the dressage have those cute hard top hates. I don't know much about the eventing just from what I have seen on t.v.! I'm pretty sure the junior and open english classes must wear the certified helmets. I'm pretty sure there is a special code that a helmet must reach. If you are going to show be sure to call the club or committee to find out what should be worn. Hope that helps!!