Iowa Darts Logo above the right eye. Get the exact fit for everyone on your team by ordering a few of each available size of the Flexfit® Wooly Combed Twill Cap. These caps are made of a 63/34/3 blend of poly, cotton and spandex fibers. Custom embroidery shows up well against any of the wide variety of colors available. A Permacurv® visor with silver underside combines with the sewn eyelets to provide some nice accents.