This is a combo of Heavy Washed Cotton Twill with Flat Lock Chain Stitch Embroidery & Flat Embroidery. This has a unisex unstructured "dad hat" fit.
The Baseball Cap: In 1860 the ancestor of the baseball cap was born, being used by the Brooklyn Excelsiors. By 1900 the "Brooklyn style" cap became the style of the day. Over time this hat was designed to protect the player's eyes and face more effectively until the modern baseball cap was born.