This pattern can be easily adjusted to fit smaller or larger heads-the lace pattern is worked over a multiple of six stitches. Simply add or subtract six stitches for each 1.5" of desired head circumference.
Cast on 84 (90,96) stitches on 16" circular needle.
Being careful not to twist the stitches, join and place marker at the beginning of next row.
Row 1: purl.
Row 2: *yo, k1, sk2p, k1, yo, k1* (repeat around).
Row 3: knit.
Row 4: *k1, yo, sk2p, yo, k2* (repeat around).
Row 5: Knit.
Repeat rows 2-5 two times.
Row 14: Knit.
Continue knitting all rounds until piece measures 5 (5, 5.5) inches from bottom.
1st decrease: *K12 (13, 14), k2tog* (repeat around). Knit next row.
2nd decrease: *K11 (12, 13), k2tog* (repeat around). Knit next row.
3rd decrease: *K10 (11, 12), k2tog* (repeat around). Knit next row.
4th decrease: *K9 (10, 11), k2 tog* (repeat around). Knit next row.
5th decrease: *K8 (9, 10), k2tog* (repeat around). Knit next row.
Divide stitches evenly between two circular needles or three DPNs.
6th decrease: *K7 (8, 9), k2tog* (repeat around).
Continue in this pattern, decreasing every row, until 12 stitches remain.
K2tog around so that 6 sts remain; then pull yarn through remaining stitches with a tapestry needle.
Pull end through to inside of hat, weave in, and trim.