You will need a large-eyed sewing needle.

Finished measurements:
Chest circumference: 42.6( 44.8, 48.8, 52.8)“ 108( 114, 124, 134) cm
Finished length: 18.9( 19.7, 20.3, 20.9)” 48( 50, 51.5, 53) cm
Sleeve seam: 17.7” (45 cm) for all sizes.

Yarn used:
Wool and the Gang Big Love Cotton
Shown in Cobalt Blue and Green Zest - 8(9, 10, 11) balls