I do not usually leave reviews, but this is a fantastic harness. I bought another one at a big box store. My Aussie hated putting it on, fought with it the whole time and was able to wiggle out of it. The Ruffwear harness is really well made. It doesn't constrict or pull anywhere. My Aussie let me slip it on and she loves it. It is easy to adjust. Easy to put on. She can't wiggle out of it. And, she doesn't seem to mind having it on. Makes walking her much easier. Would highly recommend!