This is a really basic hat that you can probably whip up in an hour. Only nine rounds in all and two rows for the peak/bill. No need to swatch for gauge, just crochet the first three rounds and if your work measures 6” in diameter you’re all set.

The Zoomba yarn comes in 140 gram skeins and I used about 80 grams per hat, but brands of super bulky vary a lot so yardage is only an estimate.

Edited to add: pattern has been updated to include a baby version using about 35 yards