From the Knit Picks Website:
Shown here in a Stroll solid & multi, this sock pattern features a traditional Fair Isle motif knitted from the cuff down on one circular needle. Offered in three sizes up to and including men’s size 15, this versatile pattern is suitable for men and women and any season depending on your color choice.

Needles:
Size 2 (2.75mm): DPNs or circular for Magic Loop (for women’s sizes and men’s large)
Size 3 (3.25mm): DPNs or circular for Magic Loop (for men’s small-medium)