From the Knit Rowan website:
Knit this women’s stocking stitch sweater from the Thick ‘n’ Thin Collection, a design by Sarah Hatton using the lovely yarn Thick ‘n’ Thin (100% wool). With a lower back hem detail, turn back collar and full length set-in sleeves, this knitting pattern is for the experienced knitter.

Finished width dimensions:
47: 53: 59: 65: 71 cm
18.5: 21: 23: 25.5: 28 inches

Yarn Information:
Photographed in Pyrite 960
12, 13, 15, 16, 18 skeins
648, 702, 810, 864, 972 yards