We use the belt as extra security when hiking with our husky-mix rescue dog, since his recall isn’t very good yet and his prey drive is high. We can hold the training lead, but if we need to drop it, to cross a stream, for example, he’s still tethered to us.
It’s very easy to adjust, so we can share it between humans, and the fit is comfortable and secure. I also like the hi-vis yellow as an added safety measure.