This pattern is available to purchase from Ravelry

Rainchaser uses a deceptively simple mosaic pattern where only one color is worked at any given point to create an illusion of stranded knitting. Three colors are used for a gentle ombre effect.

The pattern includes both the hat and the cowl.

NEEDLES - US#5/3.75mm - 16”/40cm circular needles and DPNs; US#3/3.25mm - 16”/40cm circular needles;
GAUGE - 24 stitches and 57 rows = 10 cm in Herringbone slip stitch with US#5 needle
YARN AMOUNT - 300 - 540 yards total for both hat and cowl
YARN RECOMMENDED - Cascade 220 Sport, Sample shown in three colors and you can make the set with just one skein of each color
NOTIONS - Tapestry needle, markers
FINISHED SIZE - Hat Circumference: 19” (21”, 23”) to fit child/teen (average adult, large adult) head
Hat Depth: 8.15”(8.5”, 10.15”)
Cowl Circumference: 21”
Cowl Depth: 10”
TECHNIQUES USED - Casting on, Knitting and purling, Knitting in the Round, Slipped Stitches

See more like this: