You will need stitch holders.

Finished measurements
Chest circumference: 37 (41.75, 45.25, 49.5, 53.25, 57.25, 61)“ 94( 105, 115, 125, 135, 145, 155) cm
Finished length: 23.75( 24.5, 25.25, 26, 26.75, 27.5, 28.25)” 60( 62, 64 ,66, 68, 70, 72) cm

Yarn used:
Hayfield Spirit DK
Shade 431 Serenity - 2( 3, 3, 3, 4, 4, 4) balls