Size
Small, Medium and Large

Yarn
You can use any kind of fingering weight yarn
for the sample i used:

50 gram for main colour
18 gram for contrast colour 1
10 gram for contrast colour 2

Neeldes
2.25 - 2.5 mm double pointed or circular needles for magic loop, or size needed to obtain gauge

Notions
Stitch markers.
Stitch holder (optional).
Darning needle.