Traditional. But they're the Japanese sort of style, so it's probably not what you had in mind.

[They're not really "robes," he just thought of that. Anyway, it sure is getting hot, but as another float passes, it spritzes more water at them, and Eichi has to raise his arms with a laugh to block it from his face.]

They really don't hold back, do they? I'm soaked from head to toe. ♪