You will need a cable needle.

Finished Measurements:
Back width: 19(20.5, 23, 24.5, 27)“ 48(52.5, 58, 62.5, 68) cn
Finished length: 25.5(26.5, 27, 28 ,28.5)” 65(67, 69, 71, 73) cm
Sleeve to underarm: 17.5(17.5, 18, 18, 18)“ 45(45, 46, 46, 46) cm

Yarn used
Rowan Cashmere Tweed
A. Andorra Red 0006 4(5, 5, 6, 6) balls
B. Granite 0003 3(4, 4, 4, 5) balls
C. Night 000 7(8, 8, 9, 10) balls