This pattern can be used to make a hat of any size from baby to adult. I haven't add sizes to my pattern so you need to how big to make each part. If you are unsure of hat sizes a simple internet search of "crochet hat size chart" will bring up lots of charts.
This pattern can also be made with any type of yarn you prefer, or have at hand!
To give you an idea I used Worsted weight yarn (US 4) and a 4.5mm hook. The adult hat used 50g of white.
This pattern is written using US crochet terms.
Stitches used: