Requires a double-ended hook.

This pattern includes instructions on how to make a child sized hat and an adult sized hat as well as information on how to customize the size based on your gauge swatch.

Included in the pattern are links to picture tutorials showing how to do the Tunisian Simple Stitch and the Tunisian Purl Stitch needed in this pattern.

About colour: you need two colours of yarn. My preference has been for highly-contrasting colours (black and white, light blue and dark blue, etc)