You will need stitch holders.

You will also need a size US 4 (3.50 mm) circular needle, no longer than 16” (40 cm) for neck.

Finished measurements
Chest circumference: 35( 39, 43, 46.75, 50.75, 54.75, 58.75, 62.5, 66.5)“ 89( 99, 109, 119, 129, 139, 149, 159, 169) cm
Finished length: 28.75( 29.5, 30.25, 31, 32, 32.75, 33, 33.75, 35)” 73( 75, 77, 79, 81, 83, 84, 86, 89) cm
Sleeve seam:16.5( 17, 17, 17.25, 17.25, 17.25, 17.25, 17.25, 17.75)“ 42( 43, 43, 44, 44, 44, 44, 44, 45) cm

Yarn used:
Rowan Pure Cashmere
Shade 094 Chalk - 10( 11, 12, 13, 14, 15, 16, 17, 18) balls