From the Knit Rowan website:
Knit these accessory arm warmers from Boho Chic. Designed by Emily Platt using the exciting yarn Big Wool Colour (wool and polyamide), these ribbed, fingerless arm warmers are finished with cute pom poms.

Finished dimensions:
Each completed item measures approximately 25cm circumference by 20cm high.

Yarn information:
Photographed in Rowan Big Wool Colour Fete 101
1 skeins
87 yards