A breast-band is a type of harness worn by animals to keep their chests and shoulders from rubbing against the straps of a carriage or other equipment. There are many different synonyms for breast-band, including breast collar, breastplate, yoke, and martingale. Each of these terms refers to a slightly different type of harness, but all serve the same basic purpose of distributing weight and pressure across an animal's chest. Some breast-bands may be simple straps, while others are more ornate and include additional decorations or functional features like chains or bells. Regardless of the specific type, breast-bands are an essential part of many types of equestrian and farming equipment.