The thing about the Gentle Leader is that they can't back out of it, it fastens around the muzzle and behind the ears from a point under the chin/neck area. I use a backup of a simple chain that is clipped onto the leash with the head collar and is looped through itself and around the head. I think the clasp on the head collar may have popped open once or twice in the last dozen years (operator error, getting hair into it or not fastening completely). It's our system so I keep it up. All three dogs wear these collars. They all love walks, but when we get home the lab always makes a big deal of rolling around and rubbing his face on the ground or carpet.