"Works really well for hard pullers. My 90# lab mix used to pull me down the street (and would still walk in front of me with some steady contact in a prong collar), but she walks at heel position very nicely in this collar. Also, it stayed on every time she slammed on the breaks and tried to pull her head out of the collar.
There IS one flaw though --- the part that loops over her snout would get loose and slip off (thus negating the entire point/usefulness of the collar) because there was so much slack. However, I put the collar on her and marked the minimum length needed in order to slip the loop over her nose and then put metal brads there. SO, now it doesn't allow as much slack in that area (but still doesn't apply pressure unless necessary) and it doesn't slip off.
Overall, the product is very good but needed a bit of tweaking to make it virtually perfect --- so, a good buy, but be prepared to make this adjustment if necessary (but then again, it could just be my dog)."
