This is the best harness I have found! I have tried many brands but they were either too big or too small. This harness (size small) fits my rat terrier perfectly. It is soft and comfortable but she can’t pull out of it. I liked it so much I bought many colors! Great product!

I ordered two sizes on this vest because my dog was right on the edge of Medium and Large. Keep Doggie Safe recommended going up on the size and as it turned out that did fit the best. I think it is a tad big loose, but the next size down was a little snug. We kept the large in the orange color and it should really show up at night. It is a fairly small vest which is nice for our hot Phoenix summers. The green/yellow was really nice color too, but its going back because it is too small. It has a nice area for his "SERVICE DOG" badge. I was hoping Simon would quit shaking with this vest, but no such luck, they all make him itchy I think. FYI He is a miniature Australian Shepherd (about 20 pounds) and needed the large. He's short but stocky.

I really like this harness. It's easy to put on and comes in many colors. I ordered one for my other dog which is how I became a fan of this harness when I got my new dog, I immediately went to order one for him. It has a double safety because it has a velcro closure which makes it adjustable and then it has a snap in connector which holds it all together. Great value.

Exactly the harness I've been searching for for my small service dog. She's comfortable and I'm comfortable!

Runs big for being XXS.