Schneiders® Adjustable Running Martingale AttachmentSchneiders Adjustable Running Martingale Attachment This running martingale attachment makes it easy to take on and off without having to unbuckle your reins. It can attach to your 3 point or 5 point breastplates. Simply snap the open clip o ring onto your reins to take on and off. Made from supple leather with plenty of adjustability, this is a great piece of tack to have handy at the barn for your training needs. Made of durable, supple, top tier