I am SO glad this came up as a suggestion after spending hours looking at different leashes. I have tried short ones, long ones, retractable ones, and even tried the bungee extensions you can put on the end. And still, my Border Collie would pull like hell and I struggled with loose-leash training. I’m so glad I got this for these reasons:1. Length. 4’ to 6’ adjustable length doesn’t seem like much. But it’s been brilliant for loose-leash training. I started at pretty much the 4’. And it helped See full review