We were told such great things about these clips so I purchased a few for clients. Sadly, 3 of the clips used on Herm Sprenger collars, come undone. They magically unclip from the Herm collar if there is movement such as a shake or if they walk too fast or run. It seems the toggle thingy you push down with your finger is pretty weak/loose on many of them. For a safety strap, this shouldn't be occuring. I do like the colours they come in, the length and they are not bulky.
