You will need size US 7 (4.5mm) double pointed needles and a cable needle.

Finished measurements“
Back width: 32.5(36, 38.5, 43, 46.5)” 82.5(91.5, 100, 109, 117.5)cm
Finished length: 32.5(33, 34, 34.5, 35.5)“ 82(84, 86, 88, 90) cm

Yarn used:
Rowan Pure Wool Superwash Worsted
Shade 124 Rich Red - 17(18, 19, 20, 21) balls