From the Knit Rowan website

Knit this ladies sleeveless, belted cardigan with zig zag design from Rowan Studio Issue 31. A design by Lisa Richardson, using our wonderful soft blend Wool Cotton 4ply (wool and cotton), this knitting pattern is suitable for the average knitter.

Finished width dimensions:
45, 50.5, 56.5, 62.5, 69 cm
17.5, 20, 22, 24.5, 27 inches

Yarn information:
A - Misty 496
6, 7, 7, 8, 9 skeins
1182, 1379, 1379, 1576, 1773 yards

B - Antique 480
4, 5, 5, 6, 6 skeins
788, 985, 985, 1182, 1182 yards