This is by far the best and most functional harness for dogs. It’s extremely safe, the dog has no way to get out of it, it’s also good for running, for support when necessary, very comfortable, made with a material that does not dull the dog's hair( short hair especially), extremely light, can be attached very easily. It’s our harness for long walks. It offers extra comfort compared to a normal harness and I think it is very useful for situations when there are problems with fireworks or other anxiety problems because it provides fixed support on the heart. We don't have any other problems, but I noticed the difference with the other harness, so this one certainly helps a lot, as well as a good support.