You will need a circular needle size US 3 (3.25 mm) at least 48” (120 cm) long .

You will need 5 buttons, approximately 5/8” (15 mm). Rowan used mussel shell buttons #TGB4276 from Textile Garden in the UK

Finished measurements
Chest circumference: 31.5( 35.75, 39.25, 43.75, 47.25, 51.5, 55, 59.5, 63.5)“ 80( 91, 100, 111, 120, 131, 140, 151, 161.5) cm
Finished length: 19( 19.75, 20.5, 21.25, 22, 22.75, 23.25, 24, 24.5)” 48( 50, 52, 54, 56, 58, 59, 61, 62) cm

Yarn used:
Rowan Felted Tweed
A. 190 Stone - 2(3, 3, 3, 4, 4, 4, 4, 5) balls
B. 192 Amethyst - 2(2, 2, 2, 2, 3, 3, 3, 3, 3) ball
C. 170 Seafarer - 1 ball for all sizes