Tidepool – Free Crochet Hat Pattern


The charm of exploring a tide pool is in expecting the unexpected. Beautiful and always surprising, tide pools are one of my loves. This hat shimmers in blues and greens and its construction is an adventure in unpredictability!  The sideways construction allows for a huge negative ease found only in knit fabrics.

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Yarn: Malabrigo Mechita 100% superwash merino wool (420yds/100g per skein) fingering weight yarn; one skein in Island – MTA713

Hook: 3.75 mm

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Before we get to the pattern, let’s take a moment to drool over all these Finito and Mechita color choices by Malabrigo.

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Pattern Info

Gauge: 16 rows and 25 sts = 4 inches in pattern

Sizes: Baby, Toddler, Child, Teen/Adult


Baby – 16” circ., 6” height, 2” brim

Toddler – 17” circ., 7” height, 2.5” brim

Child – 18” circ., 8” height, 3” brim

Adult – 19” circ., 9” height, 3.5” brim


  • This hat is worked sideways, the edges of the rows form the top and bottom of the hat. First and last rows are sewn together then the top is closed by decrease rnds.
  • Ribbed side will be the inside of the hat but will show most on the brim – this is referred to as the RS. Feel free to choose your own RS based on what you like best.
  • This hat has a lot of negative ease. Be sure your gauge and yarn/hook combo allow for 3” negative ease for the adult size hat (the smaller sizes will have slightly less negative ease).
  • Turn chains do not count as a stitch.


BL        back loop

ch        chain

dc        double crochet

hdc      half double crochet

rep       repeat

sc         single crochet

st         stitch

RS        right side

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Create a chain based on which hat size you’re making: Adult 12”; Child 11”; Toddler 10”; Baby 9”.

Row 1: (RS) Sc in second ch from hook and in each ch across. (Stitch count based on ch.)

Row 2: Ch 2, turn, hdc in each st across.

Row 3: Ch 3, turn, dc in BL only of each st across.

Row 4: Ch 2, turn, hdc in each st across.

Row 5: Ch 1, turn, sc in BL only of each st across.

Rep rows 2 – 5 until hat measures: Adult 19”; Child 18”; Toddler 17”; Baby 16”.

Fold hat in half with first and last row even and right side facing, sew together by working a sc through both layers, do not finish off.


Closing the top:
Note: Work this section in a spiral with no visible transitions between rnds; do not connect rnds.

Rnd 1: Begin where last sc from seam ended, work 1 sc in the end of each row around. (st count = number of rows worked).

Rnd 2: Dc2tog around (work 1 dc at the end if there’s an uneven st count).

Rnd 3: Sc2tog around (work 1 sc at the end if there’s an uneven st count), finish off leaving a 6” tail for sewing.

Whip stitch around row 3 to close hole.

Attach pom to top of hat.

Fold brim up to desired length or size indicated in notes.

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Hope you liked the pattern! Comment below with any questions. I added some YouTube videos from my channel below. Enjoy!

Crochet often. Create always!



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