We are looking for a good dog harness to walk our new and enthusiastic 9 month old lab/border collie mix. We initially got a pretty standard one where the leash clips to the back from Lupine Pet. We had it recommended to us from a trainer to try the Wonder Walker. Since the leash clips to the chest on that one, it is supposed to discourage pulling. Today however, our very clever dog managed to get out of his harness in his excitement to go leet a German shepherd we were trying to pass. We are doing more training to get him to be a better listener, but would love a great harness to support that training!