For sizes infant-child check out the Brickwork Summer Sun Hat Kids Version

Materials:
I 5.50mm Crochet Hook
Worsted Weight Cotton Yarn (Approx 200 yards)
Yarn needle
Gauge:
7 stitches + 5 rows = 2 inches
Difficulty:
Intermediate
Stitches:
CH: Chain- Yarn over pull through one loop.
SS: Slip stitch- Insert hook into stitch. Yarn over and pull through both the stitch and loop on the hook.
DC: Double crochet- Yarn over. Insert hook into stitch. Yarn over pull through stitch. Yarn over pull through two loops. Yarn over pull through two loops.
SC: Single crochet- Insert hook into stitch. Yarn over pull through stitch. Yarn over pull through two loops.
HDC: Half double crochet- Yarn over. Insert hook into stitch. Yarn over pull through stitch. Yarn over pull through three loops.
FPDC: Yarn over. Insert hook around the front to back and around stitch. Yarn over pull through stitch. Yarn over pull through two loops. Yarn over pull through two loops.
Notes:
- Turning chain does not count as a stitch so don’t forget to work in the same stitch as join!
Instructions:
Round 1: Chain 1. 10 Hdc. Join with a SS to the first Hdc made. (10)
Round 2: Chain 1. 2Hdc in each stitch around. Join with a SS to the first Hdc made (20)
Round 3: Chain 1. *2Hdc. Hdc.* Repeat from * to * around. Join with a SS to the first Hdc made. (30)
Round 4: Chain 1. *2Hdc. Hdc in the next 2 stitches.* Repeat from * to * around. Join with a SS to the first Hdc made. (40)
Round 5: Chain 1. *2 Hdc. Hdc in the next 3 stitches.* Repeat from * to * around. Join with a SS to the first Hdc made. (50)
Round 6: Chain 1. *2 Hdc. Hdc in the next 4 stitches.* Repeat from * to * around. Join with a SS to the first Hdc made. (60)
Round 7: Chain 1. *2Hdc. Hdc in the next 5 stitches.* Repeat from * to * around. Join with a SS to the first Hdc made. (70)
Round 8: Chain 2. Dc in each stitch around. Join with a SS to the first Dc made. (70)
Round 9: Chain 2. *FPDC. Dc.* Repeat from * to * around. Join with a SS to the first FPDC made. (70)
Round 10: Chain 2. *Dc. FPDC.* Repeat from * to * around. Join with a SS to the first Dc made. (70)
Rounds 11- 16: Repeat round 9 -10.
Round 17: Chain 1. *2Hdc. Hdc.* repeat from * to * around. Join with a SS to the first Hdc made.
Rounds 18 – 21: Chain 1. Hdc around. Join with a SS to the first Hdc made.
Finish off. Weave in ends.