The neck stretcher is designed to help horses with self-carriage. The sturdy elastic gives when they achieve the correct frame and offers gentle pressure when they do not. Fully adjustable at the poll with a sturdy, leather slider. One size fits most horses from large pony to warmblood. Stainless steel snaps make it easy to attach to a surcingle. Reinforced and stitched leather at the snaps help to extend the life of this training tool.