A cartwheel hat (also cart wheel hat) is a hat with a wide-brimmed circular or saucer-shaped design. It may be made in a variety of materials, including straw or felt and usually has a low crown. It may be similar to the picture hat and halo-brimmed hat in shape.[1] Typically, it is worn at an angle to show off the curve of the brim, rather than being worn at the back of the head in the manner of a halo hat.