I have had this system for a few years and run with two large dogs. It was a great decision. This system allows me to run without having to worry about losing balance. I have not had a problem with the lunge buster breaking and I have been using the same original product for at least five years. I have had the clip on the waist belt pop open on me twice at the very beginning of a run. I can only conclude that I did not have it completely locked in place or after five years of use the clip may finally be wearing out. If it happens again I would buy a new waist belt without hesitation.