Bests & Worsts Reviews from Amazon

My first thought was: "I should have bought this a long time ago." My dog stopped pulling immediately. I told my mom to get one for her dog. I ordered a small for my dog, he is a little under 20 lbs. It fits him well. I looked at the Sporn website for more accurate sizing information: Sizing Recommendations X-Small: 4-10 inch neck and approximately 2-9 lbs Small: 9-12 inch neck and approximately 8-25 lbs Medium: 12-17 inch neck and approximately 25-60 lbs Large/XL: 16-33 inch neck and approximately 60-100 lbs