Tanned leather collier martingale

Martingale in tanned leather that prevents the upward movement of the horse's head, acting directly on the mouth by means of the reins passing through the ring placed at the end of the fork.
The reins must be used with stoppers, otherwise the martingale can slide forward and get caught on the bit ring, blocking the horse's head and risking to make it fall.
Each strap or buckle is made of stainless steel.