It's the dancer's equivalent of an athletic supporter. The difference is that it holds everything up, pressed against theabdomen--& that's why an athletic supporter is no substitute.The reason for this peculiar, er, orientation is twofold: it keepsthe dangly bits out of danger in those steps or movements in whichthe thighs come together quickly--for example, in beats. And itensures an unobstructed line from the toes to the perineum. Sinceballet is an art that favors long lines, anything that will enhancethis appearance is good.
No, they aren't very comfortable (although a well-fitting one isnot difficult to get used to). But they are just another one of themany slightly weird things about this wonderful art of ours.
Hope that helps.
Tom Parsons[/i]