These side reins can be a helpful training aid when working on a horses contact and balance when lunging or working in-hand. They are constructed of durable poly/nylon web and feature 4 sewn-in dee rings on each rein for multiple rein position options. Reinforced snap ends for easy attachment and elastic end for a little bit of ?give?. 1" wide x 29 1/2" long each rein (6 1/2" of elastic on each rein) To use, start by attaching the non-elastic end to girth by looping side rein around girth and snapping to your desired dee ring. Elastic end can then snap to bit. Double-check that each side is adjusted equally.