Heavy cotton cropped patriotic tee M

Heavy cotton cropped patriotic tee in size M. There are no size or fabric tags. I am assuming this is 100% cotton and a size medium based on her other clothes. Tee is from Sea World and says "Long may you wave." Please check measurements carefully. In good used condition. Measurements are approximate in flat lay. Pit to pit 19.5 in. Length 20 in.