I LOVED this!! When Jax was a pup (around 7 months or so) we got this. I think he was in the small (and was probably 10lbs at the time). It did take a lot to get the sizing right. Very tricky, but once you size it right, it should be fine. It taught him how to walk properly in a day!! I used it for probably 3 months and then we went to a normal harness. |