It works!!!!!
I had to post a review for this, my 2 year old Labrador pulls really badly on the leash, I've tried so many things including a dog trainer and nothing worked, thought I might as well give this a go as it wasn't that expensive but was not expecting much, and it worked straight away!!!, I absolutely couldn't believe it, I haven't been able to take him out on my own as I'm getting over an op and couldn't risk his pulling, but now I can!, I can't tell you what a difference it's made