Absolutely well made harness. Stitching is done very well and all the tension buckles are metal. I wish the locking buckles were also, but they are made of nice quality injection molded buckles. I have a medium/large size Rat Terrier/Chihuahua mix. It's usually hard to find a nice harness because most that I find that fit him are cheap and don't last. This one looked well made in the ad and it was just as it appeared in real life. A rare thing with sellers today. All the extras were nice, the leash and the patches “best friend” are very nice additions. He isn't a puller, he is super well trained, so I can't vouch for its ability to be slipped but if it's fitted well it shouldn't. The front tension buckles did slip loose a tiny bit after a near 2 mile hike at the state park today. If it does it again I will stitch it in place but if you have a puller, this might be an issue for you too. I am very happy with it, its tiny flaws aside.