Beautiful texture, ribbed beanie was wonderful falling fans / shells design. You can use any type of worsted weight yarn.

Supplies
I love this yarn print, daydreamery, 5 oz, 142 g, 252 yards, 230 m… Approx one half of the skein
US I-9/5.50 mm
Optional-US H-8/5.00 hook

Stitches you will need to know
Magic circle
Half double crochet= HDC
Optional standing double crochet
Double crochet= DC
Double crochet two together
Front post double crochet= FPDC
Back post double crochet= BPDC
3 DC cluster (Note: we will omit the traditional CH 1 to close after the cluster.)

Tips and thoughts

An adult size hat measures 6 3/4” across the circle before you stop increasing.

Gauge= why bother?
I think hats are sometimes difficult for some people to make. Even if you use the exact yarn and the exact hook size we all crochet a little differently, our tension is different. So yes, to be able to make a successful hat and have it fit, please do a gauge Swatch.