I'm not sure what the other reviewers are talking about. On and off buttons.? Help with leash tension? No! This is a brilliant collar/handle gadget. To control your dog. Let's say a pizza seller comes along and you have your first dog. You simply take the back of the collar as usual. But when you do, that handle pops out, giving you more control over your dog. This is just crazy genius! Now that we're in the car, I don't have to fidget. putting my hand under his collar, no, wherever we are and whatever our situation, my dear, I will have complete control over my little animal! Recommend this to every 5 star love mom and big ^5