From the Knit Rowan website:
Knit this soft ladies sweater, a design from the Rowan archive that is now available to purchase online. Designed by Kim Hargeaves using our stunning yarns Kid Classic (lambswool and mohair) and Kidsilk Haze (mohair and silk) worked together, this design has a chunky roll neck with two button detail.

Available for individual sale in English.

Finished width dimensions:
47.5: 50: 52.5: 55: 57.5 cm
18.5: 19.5: 20.5: 21.5: 22.5 inches

Yarn Information:
Kid Classic
A - Glacier 822
6, 6, 6, 7, 7 skeins
918, 918, 918, 1071, 1071 yards

Kidsilk Haze
B - Heavenly 592
4, 4, 4, 5, 5 skeins
916, 916, 916, 1145, 1145 yards

Extras:
QTY (2) Rowan 00359 buttons

Gauge notes:
16 stitches and 20 rows to 10 cm measured over stockinette stitch using largest needles and yarn A and yarn B held together throughout.