The Oslo Hat is worked in two strands of yarn held together from the bottom up in stockinette stitch. The first part of the hat is worked on a 40 cm [16 inches] circular needle, while the top of the hat is worked either on double-pointed needles or on a circular needle using the Magic Loop technique.
Begin by working a swatch to check that you have the correct gauge.
Sizes: XS (S) M (L) the approx. equivalent to baby (junior/woman) woman (man)
Measurements: Fits head circumference 47-50 (50-55) 55-59 (59-62) cm [18½-19¾ (19¾-21¾) 21¾-23¼ (23¼-24½) inches]
Gauge: 22-23 sts x 32 rows = 10 x 10 cm [4 x 4 inches] in stockinette stitch on 3.5 mm [US4] needles
Needles: Circular needles: 3.5 mm [US4] / 40 cm [16 inches]; Double-pointed needles: 3.5 mm [US4]
Materials: 100 (150) 150 (150) g Arwetta Classic by Filcolana (50 g = 210 m [230 yds]) or Sunday by Sandnes Garn (50 g = 235 m [257 yds]). Note that two strands of yarn are held together throughout, and that the yardage given is the total yardage needed.
Difficulty: ★ ★ (2 out of 5)