From the Knit Rowan website:
Knit this ribbed hat accessory from the Thick ‘n’ Thin Collection, a design by Sarah Hatton using the stunning yarn Thick ‘n’ Thin (100% wool). This knitting pattern is for the beginner knitter.

Finished dimensions:
Completed hat measures 52 cm (20.5 inches) around head and is 23 cm (9 inches) long.

Yarn Information:
Photographed in Soapstone 966
1 skein
54 yards