Designed to stretch and assist in reducing the effects of sudden shock when the horse is tied up or travelling. There is a bull snap hook at one end, and a panic snap at the other to provide an easy, one-handed release in case of an emergency. All fittings are nickel plated.
My sister works for the manufacturer, and she purchased some for me on my birthday in 2020. They are sturdy, flexible and made of some strong stuff. Used to buy Kmart tubs that would only last a few months. I plan on buying more, if I ever need new ones in the future.