I bought several of the Liâ??l Pals Retractable Power Walker leashes 10 years ago when I got my first Papillon. They were so easy to use and the alligator clip even clipped to a harness with double rings. After all the years of use, they are still working, but the black rubber wears off on my fingernails. The black was so hard to get off my nails, so I searched for another. They are very hard to find, I finally found them online at Doggy Gifts. Andrea special ordered this newer version, still with the slide catch, but with the newer E-Z clip. I like the new one. It is very easy to hook and unhook the clip. However, this clip will not fit in a double ring harness., so I was a little disappointed with that. I really wish they would offer this again with the slide and the alligator clip that would work better with a harness than the E-Z hook. My dog is very gentle, so I am able to hook the clip through just one of the rings of her harness. My desire would be to have an xs retractable power walker with an E-Z clip that would fit through both rings of a harness.