From the North American Schachenmayr website:
Lengthways, diagonal, grey and green: This women’s hat made with Schachenmayr select Alegretto distinguishes itself with its unique ringed pattern. No wonder then that it attracts all the attention. Due to the knitting style the green rings curve outwards more than the grey rings, making this piece particularly striking. This creates an effect which you will struggle to find on any other hat.

Finished dimensions:
To fit head circumference: 20.5 to 22 inches (52 to 56 cm)
Height of hat: 9.5 inches (24 cm)

Yarn Information:
A - 08516 Silver
2 skeins
68 yards

B - 08508 Neon Yellow
2 skeins
68 yards

Gauge notes:
- 12.75mm needles are listed in the pattern as the equivalent of US 17 needles.