Finished Circumference of Hat: 53 cm.

Materials
Alafoss Lopi (100% Icelandic wool)
Set:
A #85 (Oatmeal): 3 skeins
B #52 (Black Sheep): 1 skein
C #53 (Acorn): 1 skein
D #51 (White): 1 skein

Hat: A #85 (Oatmeal): 1 skeins
B #52 (Black Sheep): 1 skein
C #53 (Acorn): 1 skein
D #51 (White): 1 skein

Mittens: A #85 (Oatmeal): 1 skeins
B #52 (Black Sheep): 1 skein
C #53 (Acorn): 1 skein
D #51 (White): 1 skein

Knitting needles:
Size 5mm and 6mm circular (40cm)
Size 5mm, 6mm and 6.5mm double pointed needles
Crochet hook size G
Stitch holder
Stitch markers
Tapestry needle

Gauge
13 sts and 18 rnds to 10cm in st st on larger needles
14 sts and 19 rnds to 10cm in st st on middle size needles.
To save time and to ensure accurate sizing, check your gauge and change needle size if necessary.