From the North American Schachenmayr website:
A great loose-fitting hat that lays softly on the head, firmly held by a generous band. Striking diagonal ribbing and the attractive blend of the Schachenmayr original Boston yarn are further details that make this accessory style so popular.

Finished dimensions:
Completed hat fits a head circumference of 20½ to 22 inches (52 to 56 cm) and measures approximately 10¼ inches (26 cm) tall.

Yarn Information:
Photographed in 00190 grey denim
3 skeins
180 yards