Henri de Rivel Advantage Plain Raised Standing MartingaleHenri de Rivel Advantage Plain Raised Standing Martingale The Henri de Rivel Advantage Plain Raised Standing Martingale features a simple design for a classy, traditional look. This type of martingale is seen most often in the hunter ring, appropriate for schooling or the show ring. This standing martingale is crafted in several basic color options to match the rest of your tack collection.