Those are pretty expensive. But, they also interest me since I saw them in a Clinton Anderson catalog/website called Mane Sox. Much cheaper and they will do the same thing.
My horses' hair tends to intertwine after a rain so I would be interested in getting these myself.
But, at least check out CA's, they are only $27 I think.
That's so funny...I think they look hilarious, but I guess if I ever had a horse that I desperately wanted to keep a long mane on, I would probably use them. Lol!