You will need 10 buttons, approximately 5/8” (15 mm) each. Rowan used # TGB4083 wood buttons from Textile Garden in the UK.

Finished measurements:
Chest circumference: 34.5( 38.5, 42.25, 46.25, 50.25, 54.25, 58, 62, 66)“ 87.5( 97.5, 107.5, 117.5, 127.5, 137.5, 147.5, 157.5, 167.5) cm
Finished length: 24.75( 25.5, 26.5, 27.25, 28, 28.75, 29.25, 30, 30.25)” 63( 65, 67, 69, 71, 73, 74, 76, 77) cm

Yarn used:
Rowan Creative Linen
Shade 629 Apple - 4(5, 5, 6, 6, 7, 7, 8, 8) hanks