To be able to understand and make this beanie, you need to be familiar with the cross stitch
and how to make a circle, a link to the video tutorials on both is below.
The beanie is worked with a single crochet first and the following round in a cross stitch, the
increase of the rounds to make the beanie flat at first is only done on the single crochet
round, for the cross-stitch round is the same throughout the work, no increase or decrease.
The width is explained below, like for small size you would stop flattening the circle at round
15 for the medium and large size you will add 1 and 2 rounds of flat circle accordingly to
each size.
Measurements
19/25 cm

The video tutorial link is included in the pattern.