This is a pair of hand braided black reins made from the finest 550 nylon commercial paracord. They are made from 6 strands of braided paracord. They can be adjusted shorter with the conway buckles. The colored knots make it much easier to teach riding lessons. The knots are based on a red light.....green knots to make the horse go, move down to the yellow knots to make the horse slow down....move down to the red knots to make the horse stop. You may choose from different lengths when ordering.