From the Knit Rowan website:
Knit this open sided sweater in Handknit Cotton. Designed by Sarah Hatton is featured simple textured bands and a three needle cast off feature, it would be suitable for a knitter with a little experience.

Finished width dimensions:
at hem
46.5: 48.5: 50.5: 53.5: 56.5: 59.5: 62.5: 65.5: 67.5: 70.5 cm
18½: 19: 20: 21: 22: 23½: 24½: 26: 26½: 28 inches

sleeve cuff to sleeve cuff
66.5: 68.5: 70.5: 73.5: 76.5: 79.5: 82.5: 85.5: 87.5: 90.5 cm
26: 27: 28: 29: 30: 31½: 32½: 33½ : 34½: 35½ inches

Yarn information:
Photographed with Rowan Handknit Cotton in Slate 347
11, 11, 13, 14, 15, 16, 17, 18, 19, 19 skeins
1023, 1023, 1209, 1302, 1395, 1488, 1581, 1674, 1767, 1767 yards