My only regret is, is that I didn't buy it sooner. My 1 yr old Golden is a great dog but a horrible puller. I gave up on walking him because it was so stressful trying to walk him to just get pulled and yanked around. We've tried so many other collars and nothing worked. Until this. He still pulled a little, especially in the beginning of our walk, but it was dramatically less. I actually enjoyed our walk and ended up walking him 1 1/2 miles. I'm happy, and he's happy.