Singapore Sling features a deep, detailed lace motif that absolutely sings in a soft, round worsted weight yarn.

You can wear this one cuffed and fitted to the head or with the brim straight down as more of a long, slouchy hat.

Crown shaping was modified in the 2023 update to be just a little more delicate.

Sizes:
Hat stretches to fit a 18(20,22)“/45.75(50.75,56)cm head.

Circumference:
17.5(19.25,21)”/44.5(49,53.25)cm around in lace,
16.75(18.25,20)”/42.5(46.25,50.75)cm around ribbed brim

Depth:
10.25(10.75,10.75)”/26(27.75,27.75)cm deep, unfolded.

Yardage per size:
f175(190,210)yds
160(175,192)m
A round, worsted-weight yarn with some memory is needed.