This is a fun colourwork design that involves absolutely no colour stranding which is always a bonus in my book!  
The two colours are worked separately, on alternate rows which means you don't get the double layer of yarn you get with something like fairisle.

The hat uses two skeins of Plump shown here in bonbon and marshmallow (1 skein of each colour) which plenty left over for a pompom of either colour.

Instructions are written in the round. 
You will need 10mm and 12mm circulars or dpns.

Please note that this pattern is sold as a physical copy; it is not a PDF.