From the Knit Rowan website:

Knit this unique, cable-detail snood with feature pompom ties. Designed by Lisa Richardson this versatile project is photographed in Rowan Drift, but can easily be knitted in Big Wool or Big Wool Colour.

Finished dimensions:
Covering arms from side to side
59: 68: 76.5: 85 cm
23: 27: 30: 33½ inches

Yarn information:
Quantities are listed for Big Wool or Big Wool Colour
8, 8, 9, 10 skeins
696, 696, 783, 870 yards