I have been using perfect fit harnesses exclusively for over 3 years. I have two beagle girls and regular harnesses fit poorly, so this is an amazing and more cost effective alternative to having harnesses custom made. The fact you can replace just one of the 3 pieces is also amazing. One of my beagle girls likes to rub agains walls which means the y front piece needs replacing sooner than the rest. So rather than purchasing a full new harness, I replace 1 piece only, again making it way more cost effective in the long run. The rest is still going strong 3 years after purchase. My girls are comfortable and love their harnesses, especially as there is no need to pull anything over their head (something they dislike). I personally like the front clip option to help with training on pulling. I would highly recommend this harness to anyone.