A breeching dee dating circa 18th-19th century.

Breeching goes around a working horse's hindquarters and is used when a cart or other vehicle is being drawn. It is the means by which the cart is prevented from running into the horse's rear when going downhill - in effect, a brake. It also enables the horse to reverse the cart if required. Fittings of this type are stitched to the breeching harness and connect the hip strap to the breeching seat and side straps (see Image 3).