Acavallo Thiedemann Reins Tubular NylonAcavallo reins made of leather and tubular nylon, with stainless steel buckles. Correcting wrong horse behaviors and postures. The Acavallo Thiedemann reins complete with breastplate are an essential tool for mounted work. These reins are designed to apply effective pressure to the horse's bit when he raises its head too much, ensuring complete control in the rider's hands. They are ideal for muscle improvement of the horse's upper neck line, helping