When the girth arrived I was very concerned that it would be too small even for the smaller Arab. Out of curiosity I tried it in my generous-bellied Quarter mare to try to get an idea of fit for the Arab. I love this girth! It nicely fit the quarter horse, and will be no problem for the Arab. The "clicking" buckles make such a difference in the ease of tightening the girth. Quality is great as well. Love it.