Cabled Yak Hat

There are so many options for beautiful knit hats this time of year. If you wish to "up your game a bit" and try cables in a hat, this is a good choice.  It uses 100 grams of any worsted weight yarn. It  is sure to keep your ears toasty during the winter chill.
Materials:
200 metres (220 yards) of worsted weight  yarn (usually 100 grams)
4mm 16" circular needle
4.5mm 16" circular needle
4.5mm DPNs
cable needle
Abbreviations:
C2L: left cross cable - slip 1st 2 stitches onto cable needle and let hang to front of work. Knit the next 2 stitches from the left needle, then holding the cable needle in your left hand, knit the 2 stitches from the cable needle.

Working in the round and using smaller circular needles, cast on 108 stitches, join.
Round 1: Knit
Round 2: *Knit 1, purl 1* repeat from * to * around. Repeat second round until band measures 6 cms/2.5 inches.
Turn piece inside out, knit 1 round, increasing 2 stitches evenly =110 stitches.
Change to larger circular needles.
Work Pattern:

Rounds 1-3: *knit 4, purl 6* repeat from * to * around
Round 4: *C2L, purl 6* repeat from * to * around.
Rounds 5-6: As for rounds 1-3.
Repeat these 6 rounds until hat measures 12 cm/5 inches from start of cable patterning.
Next round: decrease 1 stitch in the middle of every purl section. Decrease in this manner every 4 rounds twice more, then every 2 rounds twice.
There is now 1 purl stitch remaining between cables. Work 1 round after the last decrease.
Next round: knit 2 together in the middle of each cable. Work 1 round purl 1, knit 3. On the next round knit 2 together around.
Cut yarn, thread tail through stitches, gather and sew in end securely on wrong side of hat.