Excellent purchase, I would recommend this harness to anyone who has a dog that pulls hard. I have a jack russell, who typically wants to run everywhere rather than walk. The front clip on the harness turns the dog enough to gently break his stride. It takes the pressure off his windpipe and does not rub him or cruelly pull tight anywhere, a problem I have had with other harnesses. My advice would be to follow the easy measuring guide, as these harnesses fit snugly and accurately. Bobby is far more relaxed on walks now and so am I. Fantastic service too, item was received very quickly, thanks.