The 'Halti' brand ones are good LS, we used to use one on our dog. I got mine for about $15 on special at pet barn, but they can be expensive..if you teach them to walk properly on a lead from the beginning you shouldn't need to use one, so I wouldn't worry about getting one right away because it might not be something you end up using. (if you do need to down the track, you're more than welcome to borrow mine, it just sits here doing nothing now!)