I reluctantly ordered this bridle for my horse who head shakes due to seasonal allergies. He has never tolerated a bit or bridle very well. For the first time ever, we’ve been able peacefully ride without him reefing (yanking the reins) and head flicking. It does fit a little weird for stock horses (almost last hole in some areas and first hole barely fits in others), especially tight just before the jowl, but we make it work. He is a 16hh APHA 4 year old gelding and he wears the standard horse size.