From the Knit Rowan website:
Knit these lovely ribbed and stranded Snowflake Socks, a free pattern part of the DC and Tutor competition designed by Frederica Patmore using the exciting Pure Wool 4 ply (wool) with a Ribbed edge this knitting pattern is for the experienced knitter.

This is a FREE PDF pattern available to members of the KnitRowan website.

Finished dimensions:
To fit UK shoe size 5-7

Yarn Information:
A - Eau de Nil 450
2 skeins
348 yards

B - Snow 412
2 skeins
348 yards