Running MartingaleRunning Martingale One Collection Jump'In The running martingale from the Jump'In One Collection is used so the horse doesn't come above the rider's hand. It is enhanced by contrasting cream topstitches and has two rings to let the reins slide through them. Available in hazelnut or black Size Cob or Full The One Collection is a leather range created for a daily use with a chic and refined look. It is a wide range in which you will find a large