From KnitRowan.com website:

“Knit this boldly striped garter stitch cardigan designed by Martin Storey. It uses 4 shades of our lovely Softyak DK yarn, a blend of 76% cotton, 15% yak and 9% nylon and features raglan sleeves and and buttons at the front yoke. It is suitable for knitters with some experience.”

You will need 4 buttons to finish.

Finished measurements:
Bottom back width: 17.5(19.5, 21.5, 25.5)“ (45(50, 55, 60, 65) cm
Total length: 22(23, 23.5, 24.5 ,25)” 56(58, 60, 62, 64) cm
Sleeve length to underarm: 17.5(17.5, 18, 18, 18)“ 45(45, 46, 46, 46) cm

Colors used: Rowan Softyak DK
A. Plateau 239 - 3(4, 4, 4, 5) balls
B. Cream 230 - 3(3, 3, 4, 4) balls
C. Prairie 233 - 2(2, 3, 3, 3 ) balls
D. Steppe 231 - 3(3, 4, 4, 4) balls