Alfter a lot of thinking, I’ve finally came up with this vintage inspired pattern. Just wanted some 30`s reminiscence!

Sizes:
This pattern provides you three sizes with the following final measures:
Small: 18’ (45 cm) circumference
Medium: 20’ (50 cm) circumference
Large: 22,5’ (56 cm) circumference

How to choose a size:
First, you must know that this pattern has negative ease. This means that the final measures will be smaller than the head measures. You will obtain a close fitting beanie.
So, measure the head circumference, placing the tape measure around the head and slightly above the ears. Then, subtract 2’ (5 cm) from that number and choose the size that’s closer to that.
For example: if your head circumference is 56 cm (like mine) you won’t choose the large size but the medium one.

You will also find extra sources if you are a beginner and need to learn some used techniques and some drawings to hel you understand how to put together the hat.