Be Nice Halter in Black. The Be Nice Halter works on a pressure and release system ensuring you are in better control at all times, whether lunging, loading or leading. The Be Nice Halter allows you to correct, discipline and reward in an instant, thus ensuring your horse does not develop bad habits. The Be Nice Halter works on the simple principle that when the horse resists, pressure is automatically applied and when the horse begins to co-operate, the pressure is automatically released, which creates the reward for doing the right thing. Read more… This makes the Be Nice Halter an effective training aid as well as smart looking halter. Please see our size guide for sizing information.