You will also need a circular needle at least 32” (80 cm) long, and a cable needle.

You will also need six buttons. Rowan used #G440428 (showing the reverse of the button) from Groves & Banks in the UK.

Finished measurements:
Chest circumference: 29.75(32, 34, 36.25)“ 75.5(81, 86.5, 92) cm
Finished length: 17(18.75, 20, 21.75)” 43(47.5, 51, 55) cm
Sleeve to armhole: 11.75(13.5, 15, 17)“ 30(34, 38, 43) cm

Yarn used:
Rowan Softyak DK
Shade 236 Lea - 6(7, 8, 9) balls