I bought this for a goldendoodle puppy. I love the denim. It is very well-made. I bought the small which seemed to fit his size as he weighs 10 pounds. It fit so high on his neck it strangled him. I bought the M and that is perfect and gives him plenty of growing room. I love this set. It's so practical and is making potty training so much easier. I just attach him to me so he sits at my feet on his bed when I'm working. No more getting distracted and suddenly realizing that my Teddy has wandered away and pee'd on the floor. He's also learning how to walk on this leash when we're out although since he's tied to this leash so much I let him run free most of the time. There's a lot of land around our home so he's safe. Also love that I can attach my other dog to this leash so I can walk two dogs.