From the Knit Rowan website:
Knit this accessory textured snood, available as a free pattern to download. Designed by Vicky Sedgwick using the luxurious yarn Cocoon (wool and mohair), this snood can be knitted in the pattern to your desired length and can be worn loose or wrapped round double.

Finished dimensions:
Completed snood measures approximately 21cm (8¼ inches) wide and 126 cm (49½ inches) in circumference.

Yarn information:
Photographed in Duck Down 833
2 skeins
252 yards