At the end of September and early October, the cosmos flowers in my garden are so tall that I can no longer see the center of the blooms, only the underside of the petals are visible. The interesting stitch pattern highlighted in this hat design looks very much like those delicate blooms reaching up to the sky trying to savor the last bits of warmth from the sun before autumn settles in for good.
pattern updated 1/23/19 to include a larger size, notes on blocking, and a stitch tutorial link

Finished Measurements

20(24)” 51 (61)cm approx circumference
9” 23 cm approx length
(Smaller size shown in picture on a 22.5” circumference)

Materials
Funky Chunky from The Third Piece (100% merino wool) 82 yards (75 m)/200g (7 oz) per skein: 1 skein in Blush
Or approx 80 yards of super bulky weight yarn
US 15 (10 mm) 16 inch circular needles and double pointed needles (or size required to obtain gauge)
US 11 (8 mm) 16 inch circular needles (or two sizes smaller than gauge needles) US 2 (3.25 mm) circular needles (or size required to obtain gauge)
Stitch marker
Scissors
Tapestry needle

Gauge
8 sts and 12 rows to 4 inches (10cm) in stockinette stitch pattern US 15 (10 mm)

Be sure to take the time to do a gauge swatch and measure it before AND after blocking. Blocking can make super bulky yarn really expand.