Since the line is now a jogging leash, I have also tested times for this purpose. Goes so far similarly well. Annoying is only that the line at the hip, in spite of the neoprene, twisted when the dog runs. Alternatively, one could make the waist belt properly fixed, but this is rather unpleasant.
It is also very inconvenient to change the width of the belt (thick jacket / light jacket etc.). You have to fumble something. There are much simpler buckles.
Positives:
+ Hands free and clean
+ No tangling
+ The elastic cord protects animal and holders
Neutral:
o twists while jogging more often
Negatives:
- Too tight / to adjust cumbersome
Personal conclusion:
I am satisfied with the leash. The quality is good. It has free eg to push his hands a stroller or whatever. The length is sufficient for me. Only the displacement of the abdominal belt is a bit fiddly. If several people use the belt, it can be annoying one. Who can this attention before buying and to live with it makes sure nothing wrong.