This is actually my second Roamer. When my Great Pyrenees was a puppy with sharper teeth and in his aggressive chewing stage, he chomped halfway through the first one, and eventually while trying to resist him from a sprint, it failed. I went a while before buying a second one, until he "mellowed out". I never really used the first one for hands-free operation, but now it is just perfect! Whether it's enjoying my coffee in the morning or doing a little upper-body workout or picking up items in the yard during our treks, the Roamer is the best! The bungee is also key - for a semi-unpredictable breed like a Pyrenees who also wanders to the beat of his own drum, the gentle resistance reminds him to change course...or more often lets me know that I need to prepare to change course! Highly recommend!