From the North American Schachenmayr website:
Hats are perfect for women with long hair, creating an attractive look without the need for complicated styling. This model, made with Schachenmayr original Boston, incorporates striking brioche rib and a narrow edging. A chic winter accessory that looks amazing!

Finished dimensions:
Completed hat designed to fit about 20 to 22.875 inches (52 to 58 cm) head.

Yarn Information:
Photographed in Boston colorway 00049 purple
2 skeins
120 yards

Gauge notes:

• US 10-10.75 and US 10.75-11 are the listed pattern needles. The instructions state that 6.0-7.0 mm and 7.0-8.0 mm needles can be required in order to achieve gauge for the different fabrics.
• 7mm needles are listed in the pattern as the equivalent of US 10.75 needles.