You will need a cable needle

Finished measurements:
Chest circumference: 27.25(29.75, 31.5, 34) cm 69(75.5, 80, 86.5) cm
Finished length: 15.5(17.25, 18.75, 20)“ 39.5(44, 47.5, 51) cm
Sleeves to armhole: 10.25(11.75, 13.5, 15)” 26(30, 34, 38) cm

Yarn used:
Rowan Baby Cashsoft Merino
Shade 110 Apple - 7(8, 9, 10) balls