It should fit a small to medium adult head, it's very stretchy.
I used a sport weight yarn for one, and a worsted weight yarn for another. It really depends on how you want the final product to look. Using the sport weight yarn made the hat have a more lacy look, whereas using the worsted weight yarn gave the hat a more solid appearance.
If you like a longer slouchy, increase dc rows between row 5 and 8 to however long you like it.
Materials:
Yarn - a medium weight is recommended. I have not tested this pattern with bulky yarn.
I hook
K hook
Tapestry needle
R1: With K hook, FDC 72. Ch 2, turn
R2: FPDC, BPDC to the end of the piece. Sl st to the first st on the foundation row.
R3 & 4: ch 2 FPDC, BPDC around. Sl st to first st of the row
~~Switch to I hook.
R5-8: ch 2 Dc each dc around, sl st to the first st of the row
R9: ch 2. Dc in next 5 dc, dc2 tog. *dc in next 6 sts, dc 2 tog. Repeat from * to end. Sl st to first st of round.
R10: Ch 2. Dc in next 3 sts. dc 2 tog. *dc in next 4 sts dc 2 tog. Repeat from * to end. sl st to first st in round
R11: Ch 2 Dc in next 2 sts dc 2 tog. *dc in next 3 sts. dc 2 tog. Repeat from * to end. Sl st to first st in round
R12: Ch 2. Dc in next st. dc 2 tog. * dc in next 2 sts. dc 2 tog. Repeat from * to end of round. Sl st to first st in round
R13: Ch 2. Dc in nesst st. dc 2 tog. * dc, dc 2 tog to end of round. sl st to first st in round.
R14: Ch 2. Dc next st. Dc 2 tog to end of round. Sl st to first st in round
R15: Ch 1. sc dec each 2 sts to end. sl st to first st in round. finish off.
Use tail to close remaining hole. Pull tail to ws, tie off & weave in.
On foundation row, use tail to sew up the seam, pull tail to ws, tie off & weave in.
