See the DEIRDRE HEADBAND pattern here

NECK WARMER:
Measurements: Circumference at the top: 52 cm / 20½’’ Circumference at the bottom: 79 cm / 31’’ Height: 17 cm / 6 3/4’’
Materials:
DROPS PUNA from Garnstudio
100 g color no 07, light gray

DROPS CIRCULAR NEEDLE (60 cm / 24’’) SIZE 4 mm/US 6 - or size needed to get 21 sts x 28 rows in stockinette st = 4’’ x 4’’ (10 x 10 cm), and 21 sts x 42 rows in garter st = 4’’ x 4’’ (10 x 10 cm).
DROPS CABLE NEEDLE - for cables.