Our puppy loves wearing it and we love his improved leash performance.
Initially, the instructions were non existent, until my wife called Ruffwear and spoke with Christina who sent us an instructional video which was easy to follow.
Our European Golden Retriever puppy loves it after it is on, although he receives numerous treats while we put it on (unlike the mature dog in the video).
Bottom line, this is a wonderful harness which allows freedom of movement. We took Christina’s advice to size up if the measurements were borderline. We know we will need to size up as he grows since he is only 14 weeks, but it is worth the money for such a quality harness!