Alright, let me say that if you're looking for a harness, please stop and go no further. This product is awesome! I bought this harness solely because I wanted the green colour, but also bought "In Training" and will be purchasing "Do Not Pet" patches to replace the "Emotional Support" patches that it came with originally because those aren't applicable to our situation. I have a 70 pound Rhodesian Ridgeback/Lab mix who is easily excitable around people but also somewhat dog selective when she is on a leash, or when other dogs are on a leash. She is extremely strong, and since we adopted her from the shelter we have tried many different methods to try and control her pulling. We started with a regular leash, then tried a shorter slip-lead for more control, and then moved on to a halti head collar, which we have been using for over a year. It has been the most effective, but still hasn't been exactly what we've wanted. It doesn't seem comfortable for her (which is suppose to be the point I guess) but it's causing her to listen less because at times she becomes so distracted with trying to rub it off. In addition, when we go out in public (to Petsmart for example) people either act fearful of her by confusing a halti with a muzzle, or try to pet her constantly and render our control over her useless even with the halti. This is extremely annoying because we do not know a lot of people in our current city, let alone that have dogs, so we take her everywhere we can to try and train her to behave with less excitement in large crowds, and to maintain calm around other leashed dogs. I decided I wanted to try and maybe upgrade to a harness to see if there would be a difference, or if the reaction from the public would be different, and it definitely is! I was originally looking at basic harness that would match her collar, until these vests popped up as recommended. First off, it fits like a glove. We bought the XL size and her measurements were 31 inches. The material is so thick yet padded and seems much more comfortable for her. It is also super reflective! All the velcro aspects, are surprisingly sturdy and I don't worry about them ripping off or coming un-done. A lot of reviews said that their dog acted completely different even just with the harness on, and I have to agree. Almost like she knows she is in training mode and has to focus. We tried to training and recall inside and when she started to pull away, even a slight pull back on the harness made her back up instantly and then sit down right by my side. Usually she would be flaying everywnere and still attempting to pull. That in itself is a big improvement. When we go out for walks or to the pet store, one tug back and she knows we expect her to either slow down or sit right beside us. Even when other dogs have been barking or trying to get in her face, we can maintain better control with the handle. She is so smart and is so trainable but when she sees other people she gets so excited and happy that her manners fly out the window. It's been hard to improve her training on that when she is constantly being egged on or distracted in public. My hopes are that adults will keep their kids away so she is not distracted from us in public, and that strangers don't automatically assume they can get in her space to pet her. She is fine when playing with most other dogs off leash, but seems to feel intimidated or threatened when she is on a leash, or another dog is on a leash. This is also something we are working on, and this harness will allow other people to keep their dogs at a distance, and will be more understanding to know from the harness that she is learning rather than assuming she's vicious with her halti ("muzzle") on and making snide comments. She is not a fearful, shy or skittish dog by any means - which I know a lot of people who reviewed this and similar items have stated over her reviews, but this harness will really help with her learning curve. I feel 100 percent more comfortable with this harness and I think she does too!