Horse draw reins are a piece of equipment used in horse training to help control the horse's head and neck position. They consist of a pair of reins that attach to the bit on the horse's bridle and then pass through the rider's hands before attaching to the girth or saddle. When the rider applies pressure on the draw reins, it encourages the horse to lower its head and flex at the poll, promoting a rounded frame and proper engagement of the hindquarters. Draw reins should be used with caution and under the guidance of a knowledgeable trainer, as incorrect use can be harmful to the horse's neck and back.