You will need 4 buttons and stitch holders.

Finished measurements:
Chest circumference: 23( 25.25, 26.5, 27.5)“ 58.5( 64, 67, 70) cm
Finished length: 13.75( 14.5, 15.5, 16)” 35( 37, 39, 41) cm
Sleeve seam: 8.75( 9.5, 10.25, 11)“

Yarn used:
Sirdar Snuggly Chunky 100g
Shown in both 528 Custard and 242 Flamenco - 3(4, 4, 4) balls