Another test for the fabulous Jen Weissman.
Test thread is here.
Pattern is well written and clear.
Though my gauge is a bit tighter,
the hat is quite elastic and fits me perfectly (my head size is 53 cm). I would make it again using the same yarn and size.

Size: 2, adult small

Swatch: Instead of swatching, I used the gauge notes for this project, deciding to use the same needle size as in pattern.
I used Lykke interchangeables.

Modifications:
No modifications made, unless that I started the crown 0.5 cm earlier (at 14 cm) than suggested in pattern.

My hat gauge and measurements, with main needle 4.0 mm:
Unwashed:
Gauge: 22 sts/ 27 rows
Height brim to top: 21 cm
Circumference: 45 cm
Washed:
Gauge: 21.5 sts/ 27 rows
Height brim to top: 21.5 cm
Circumference: 45.5 cm

Yarn amount used: 66 g total, 137.3 meters (150.1 yards).
Skeins:
(1) 52 g. Used for double brim + joining: 36 g used, 16 g left unused.
(2) 53 g. Used for body and crown: 30 g used, 23 g left unused.

Notes from designer:
Sizes:
1 (2, 3)
To fit: Youth (Adult Small, Adult Large)

Blocked Measurements:
Height (measured flat): 7.25 (8, 8.75)”/18.5 (20.5, 22) cm
Brim circumference: 16.5 (18.75, 21)”/42 (47.5, 53.5) cm

The brim circumference should measure approximately 3”/7.5 cm smaller than the wearer’s head circumference.

Blocked Gauge:
20 Stitches and 26 rounds = 4”/10 cm square in stockinette stitch on US 6/4 mm needle.

Yarn:
Approximately 170 (200, 240) yd/156 (183, 220) m DK-weight yarn.
Shown in Madelinetosh Tosh DK in the Aura colorway.

Needles:

US 4/3.5 mm circular needle, 16”/40 cm long, or two sizes smaller than size needed to obtain gaugeUS 6/4 mm circular needle, 16”/40 cm long, or size to obtain gaugeUS 6/4 mm double-pointed needles or preferred method for knitting small circumferences in the round, or size to obtain gaugeSpare circular needle, preferably two sizes smaller than size needed to obtain gauge

Notions:

Crochet hook and smooth scrap yarn for provisional cast on4 stitch markers, including one in a contrasting color or shapeTapestry needleBalloon (for blocking)Pom pom (optional)