I purchased this, alongside a spare, to allow myself to more easily walk my three dogs (two on the system, one on a traditional leash) on my lunch breaks. I have three 25-30lb dogs and it really made it a lot easier! However, if you've got a dog that fiercely pulls like one of mine, this may not work as well. Safety-wise? Great, it held all their multi-directional crazy just fine! ;) I just happened to find that if we did long walks where she was exceptionally determined to chase the bunnies on our walk, I had a sore lower back the next day from where the pressure points lay. If your dog isn't a zoo, however, this is a FANTASTIC product. I think I'll just put our puller on the regular leash and the two charmers on the Buddy System!