From the Knit Rowan website:
Knit this women’s fairisle sweater from the Summerlite 4ply Collection, a design by Martin Storey using the sumptuous yarn Summerlite 4ply (cotton). With a beautiful rose fairisle pattern, three quarter length set-in sleeves and round neck, this knitting pattern has a two star difficulty rating.

Finished measurements:
Back width: 18(20, 22.5, 25, 27.5)“ 46(50.5, 57, 63, 70) cm
Finished length: 23.5(24.5, 25, 26, 27)” 60(62, 64, 66,68) cm
Sleeve length to underarm: 13(13.5, 14, 14, 14)“ 33(34, 35, 35, 35) cm

Yarn used:
Rowan Summerlite 4ply
A. 147 Pure White - 5(5,6,6,7) balls
B. 421 Buttermilk - 3(4, 4, 5, 5) balls
C. 424 Periwinkle - 1 ball for all sizes.