From Rowan website:
Knit this comfy sweater designed by Sarah Hatton using two shades of Cocoon, a lovely blend of 80% wool and 20% mohair. The sweater features set-in sleeves, and a fairisle pattern on the body and a turtle neck.

Finished measurements:
Back width: 19(21, 23, 25, 27)“ 48(53.5, 58, 63.5, 68) cm
Finished length: 23(24, 25, 25.5, 26.5)” 59(61, 63, 65, 67) cm
Sleeve length to underarm: 17.5(17.5, 18, 18, 18)“ 45(45, 46, 46, 46) cm

Yarn used:
Rowan Cocoon
A. Shale 804 7(8, 9, 10, 10) ball
B. Alpine 802 - 1 ball for each size