Train your horse on the lunge effectively with Horze Leather Side Reins with Rubber Donuts. This training aid takes the place of the rider's hands when working on the lunge. Provides a steady pressure on the bit with a gentle following release from the rubber donuts. These reins help to promote a calm, relaxed horse that has steady head carriage and uses their back effectively. These side reins are made of leather with quality rubber donuts and include snap ends at the bit and are sold in pairs.