From the Knit Rowan website:
Colourspun is a lovely wool and mohair blended yarn which is sublime to knit. Each shade is produced by blending two printed and two solid colours together and then twisted with a printed binder.

Details:
Article Number: 9802137
Fibre Content: Wool: 72%, Mohair: 14%, Polyamide: 14%
Season: Autumn Winter
Yarn Ball Weight: 50g
Yarn Meterage/Yardage: 135/148
Tension/Gauge Stitches: 22
Tension/Gauge Rows: 30

Recommended Knitting Needles:
Knitting Needle (UK): 8
Knitting Needle (US): 6
Knitting Needle, MM: 4