This woven straw hat measures approximately 24" across at the widest point and the crown measures approximately 8.6". One size fits most. It comes with one bow that attaches with a magnetic snap and is removable and interchangeable. Other bows can be purchased separately. Our bows fit on both our hats and our clutches. (Hat must be worn with a bow or the metal snap will be visible.) The hat can be turned so the bow is on the front, back, or side of the hat as desired.