From the Book’s website
Kim Hargreaves, 2013

From the Knit Rowan website:

Finished width dimensions:
47.5: 50: 52.5: 55: 57.5: 61.5 cm
18.75: 19.75: 20.75: 21.75: 22.75: 24.25 inches

Yarn Information:
Photographed in Storm
7, 8, 8, 9, 9, 10 skeins
1036, 1184, 1184, 1332, 1332, 1480 yards