We bought this harness for our Golden doodle puppy.It was a little too big at first and we ordered an extra small (she was about 3 pounds)She is now four months old (about 5 pounds now ) and it fits her perfect.She just finished up all her shots so the real test will be when we take her out for public walks because for now she’s only been in our backyard to avoid any type of illness. (we’re new to owning a puppy but this is what we were told to do from the vet)I have read reviews about harnesses for where the dogs can slip out when they back up... so that is what I’m really worried about.But so far in our backyard when she’s running around on the leash it has not happenedIt took her a little bit of time to get used to but she caught on pretty quickseems comfortable for herworks much better than the collar as a collar was always choking her when she would try to runoff. This doesn’t choke her at all Bc of course it’s not around her neckI’d say the only issues so far (and these really are very small issues)....1-hard to put on a leash one-handedThis isn’t such a big deal I just put her down instead of holding her. Then you hold the two rings together that are in the back to put the leash on2-we ordered a pink one and my husband is embarrassed of taking her out ??(well we haven’t officially taken her out in public yet but when this happens he refuses to do it because it’s pink lol)So now we will just order another one in a different colorOverall I’d say this product is pretty good. Seems very sturdy but of course she’s just a puppy and she’s small and not very strongSometimes she tries to chew on it so I can see for dogs that are major chewers that it might get destroyed but she really can’t reach it to chew on when it’s on herit’s good enough for me to order another one in a different color so we like it!