Most popular in the jumper ring, running martingales encourage poll flexion. The Henri de Rivel Pro Raised Fancy Stitched Running Martingale Attachment is great for handy last-minute changes to tack. This attachment easily connects to any breastplate with an open chest ring. Fancy raised white stitching gives a traditional detail to the piece. Imported leather and stainless steel hardware provide structural integrity that riders can depend on.