From knitrowan.com website:
This comfy turtle neck jumper sweater features an eye-catching intarsia design using two shades of Cocoon, a super soft blend of 80% wool and 20% mohair, and drop shoulders that give it a casual look. It was designed by Brandon Mably.

Finished Measurements:
Back width: 24.5(26, 28.5, 30, 32.5)“ 62(66.5, 72, 76.5, 82) cm
Total length: 25(26, 27, 27.5, 28.5)” 64(66, 68, 70, 72) cm
Sleeve length to underarm: 16.5(16.5, 17, 17, 17)“ 42(42, 43, 43, 43) cm

Yarn used:
Rowan Cocoon
A. Mountain 805 7(7, 8, 9, 10) balls
B. Polar 4(4, 5, 5, 5) balls