https://youtu.be/pjQ0IrYj95o How to shorten a dog leash? What is a non-slip dog leash?
Index
0:00 how to make dog leash shorter
0:25 D-ring
1:00 control loop
1:26 non slip leash
1:50 compare regular leash vs non slip leash
2:21 bondpaw
the purchase link of the dog leash shown in this video:
http://amzn.to/2etHQIs
High definition video may help you see all of this better. This video is shot in 4K UHD setting (if you have 4K TV, you may select this youtube Setting/Quality).