Northallerton is a beautiful slouchy colourwork hat, complete with pompom.

Yank & Co.
1 hank each in Titus Coal, Bramley Baths and Filey or the colours of your choice
A 2.5mm/US 1.5 circular needle, 16/40cm long or 2.5mm/US 1.5 set of five double-pointed needles; a 2.75mm/US 2 circular needle, 16/40cm long; and 2.75mm/US 2 set of five double-pointed needles.