If memory serves they have to be double. They can not be covered in any way. I know that for a fact b/c I only use leather or a covered burb on my stallion and if I use a covered one I have to change it out before I show him. It is funny that even the rule book does not address it very well either. I have shown NRHA shows with a leather curb but I am not sure if those are legal or not any more. Your best bet would be to ask your trainer or call NRHA.
-I'm so busy... I don't know if I found a rope or lost my horse.
-An Armed Man is a Citizen an unarmed man is a subject.
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