When we are walking Ruby, we use this leash. We have seen Cesar Millan use this very leash on his shows. We decided to try it. The verdict is in: IT WORKS! When used properly, this leash does everything Cesar says! WOW! Ruby is well behaved when walking. She listens. She is an angel when we use this leash! Purchase one using the link below and see for yourself! Thank you, Cesar, for sharing!