Delta is a textured cap in the same vein as Driggs and Frank! It can be worn any way you like. In fact, here is a photo of the original, being worn with a brioche panel to the front.

This is an intermediate project; you’ll need to be comfortable with brioche decreases (brLsl dec and brRsl dec), brioche in the round, and knitting in the round in general.

Materials:
About 105-140 yards of Malabrigo Yarn Arroyo (sample shown in Archangel colorway) or substitute yarn.
1 16”/40cm circular needle in US5/3.75mm, or size needed for gauge. You may need larger or smaller needles to knit this project.
1 set of 5 DPNs in size needed for gauge
4 stitch markers
Tapestry needle

Gauge:
Gauge is 21 sts and 38 rows measured over 4”/10cm of blocked stockinette. Work is in the round, so gauge is in the round too.