zoe braided leather neck strap system 1 brown black fA balance rein is a training aid designed to support both you and your horse in maintaining balance. When used correctly, it allows you to influence your horse in a way that encourages better collection, more responsive reactions to your aids, and improved balance. This leads to more effective use of the back and helps your horse develop a soft, rounded head and neck carriage. The reins are placed loosely around the horses neck and can be used while