Simple Fairisle, with a slip-stitch rib section as well.
Any standard 4 ply yarn will work. I used black and white, Rowan 4 Ply.
I rate these as moderate.
Yarns, needles, etc
1 x 50g ball of Wool 4 Ply – black – A
1 x 50g ball of Wool 4 Ply – white – B
Set of 3mm DPNs
Set of 2.75mm DPNs
3 stitch markers, ideally different from each other
Waste yarn or large safety pin