[StephanieandToby]

I walk a few dogs that wear a Martingale....I make sure that the collar fits snugly...like a regular buckle collar....and then only put the clip of the leash onto the middle loop of the chain-part.It really tightens up if they pull and the chain gives a good jingle for corrections....I haven't had one slip off yet, but none of the dogs I walk have the problem of backing out of a collar...they are usually pulling against it......have you thought of a Halti??