Hi everyone, I am looking for a training aid I was introduced to during an obedience class. (Unfortunately there is no label and the woman to whom it belongs doesn't remember where she got it or what it's called.) The item is a small bungee cord, about 4-5 inches long, with one end attached to a leash-like coupler to attach it to a collar, and the other end having a ring to attach it to a leash. It is meant to add a little bit of give to a leash to prevent a dog from breaking its collar. Any help would be greatly appreciated! Thanks very much!