In her Hudson River Valley studio, Carole and her team handcraft each derby hat from a base of Sinimay straw. After each hat is shaped over a heated mold, it's accented with with black and white polka dots and a touch of gold to brighten any day. Accented with a vintage brooch. Exclusive to Uno Alla Volta. Approx. 22'' inner circumference. Limited edition of 72.