This hat was very popular a few years ago. The Pistil Hat Company started the trend. The knitting world, including us, got on the bandwagon.
Finished measurement is ~21” around.
This hat is a little slouchy. Length can be easily adjusted by taking out or adding patterned rows.
Cascade Yarns Eco+
Any heavy worsted weight yarn will work
4.5 sts. to 1 inch in stockinette
16” Circular Size 7