From the Knit Rowan website:
Knit this womens longer length sweater from our Glamour Online Collection, designed by Martin Storey using the gorgeous yarn Kidsilk Haze Glamour (mohair, silk, polyester and nylon). This design has a slouchy roll neck collar and is worked in a pretty lace pattern.

Finished width dimensions:
46: 51: 57: 63: 70 cm
18: 20: 22½: 25: 27½ inches

Yarn information:
Photographed in Smoke 285
9, 10, 11, 12, 13 skeins
1593, 1770, 1947, 2124, 2301 yards