Mystery yarn, maybe Caron Simply Soft. 80 g total used.
Started making large, but it was way too big. Med fits perfectly.
Second hat 6/30/2023: cast on #6 needle. Way too small. Decided to frog it and knit with no fairisle. Cast on 84 on #6, Switched to #8 needle after 12 rows. It was a little too loose, so went down to #7 needle. Used 31 g yarn. Hat fits well and is very nice and soft. Color is a beautiful soft blue.

Third hat: Caron simply soft 65 g total wt. cast on 94 and knit completely #7 needle. Very good fit.

Fourth hat: 11/2024. For Ali. Malabrigo Rios on #6 Needle. Great fit. 76 g