Hmm... I think maybe you bought a different one than I did. The one I have has no part to slip the head through. It snaps and velcros shut on the back with a buckle. I saw the ones with the part to put the head through and actually tried those on in a pet shop and they were too big for Lola too, that is why I went with the step in kind instead and it fit much better. and is much more secure. Here is what I have:
http://ngvi.ebay.com/vi?ngvi&backtoi...qzuDjMska3g%3D