what kind of halter is this?

Judging by the horsie armor pics they have, it's probably some sort of medieval-inspired something something.

I've seen it before, I think associated with something...spanish? I don't know.... it's driving me nuts, i wanna know what it is, haha

That's the Argentinean style isn't it?

yup..i believe it is

TRADITIONAL ARGENTINE GAUCHO BRIDLE SET
http://www.usfriesianreferral.com/image…" onclick="window.open(this.href);return false;
http://www.usfriesianreferral.com/image…" onclick="window.open(this.href);return false;

like that.

Yes south American but think the Russians also do something similar too.

Yep, its a South American halter. You see them a lot in the polo world as many players and horses come from that part of the world.