You will need stitch holders. You will also need 5 buttons.

Finished measurements
Chest circumference: 37.5( 41.25, 45.75, 50, 53.25, 57.25)“ 95( 105, 116, 127, 135, 145) cm
Finished length: 26.75( 27.5, 28.25, 29.25, 29.5, 30)” 68( 70, 72, 74, 75, 76) cm
Sleeve length: 18.5( 19, 19.25, 19.75, 20, 20.5)“ 47( 48, 49, 50, 51, 52) cm

Yarn used:
Sirdar Country Classic Worsted
Shown in both shades 662 Mineral and 664 Black
9(9, 10, 11, 11, 12) balls