We’ve always had PerfectFit harnesses for our collie, since he was a puppy. I say “always” had, but actually, they are so well made that the one I just bought was really just to have another, rather than the fact he needed one. The harness is soft and can be adjusted in so many places that it really is, pardon the pun, a perfect fit. The advice we got from customer service before we bought our first one, and their willingness to swap over parts we didn’t think were going to allow for growth when he was a puppy was just amazing. Fantastic product, fantastic service. I would have no hesitation in recommending.