The yarn listed in the book is Cascade 220 superwash, #4. The yarn actually used is Cascade 220 superwashSPORT, #3 weight.(DK, light worsted).

The hat is fun and buttons are functional. Different types of buttons can change the look of the hat.

Known as Simplicity in Fall 2017 publication.

Here is a chart for the hat decreases. (made by me)
https://drive.google.com/file/d/1r30BdRSZJeVECvTDRhywfQAv...