I've had my Cardio Canine for over a year now and it was a great purchase. I really shopped around before purchasing a hands-free leash and am very pleased I did. This product is comfortable and has useful pockets. It has allowed me to focus on my running rather than Howie and his leash. My dog is a chow chow mix and quite strong. I find that having him tug on my center of gravity, rather than one arm, also provides me with better control. I even had to return the first one I ordered because it was too small and there was absolutely no difficulty with the exchange. All in all a great purchase and I highly recommend it.