This leather side rein (19 mm) with long rubbers gives the horse more freedom of movement, as the rein yields as the horse moves. The closures are widely adjustable and feature buckle closures. The snap rings are attached to the bit rings. The side rein has stainless steel haberdashery. The purpose of the side rein is to work towards a lower, horizontal or higher straightening and is used to teach the horse to yield and thus balance the lateral flexion of his body. The side rein can be used while riding and lunging.