Yarn;
A left over Scheepjes, Invicta Colour, about 20 grams / 0.7 oz. or a different 4ply fingering weight self striping yarn.

Prym crochet rings;
12 rings of 26 mm, 13 rings of 36 mm

Crochet hook
3 mm

Notions
Tapestry needle

Extra
I use US terminology for my patterns
My patterns come in 2 languages; English and Dutch