It's in Your Pocket Number 4 by Catherine Berry

It's in Your Pocket Number 4

Knitting
January 2020
Fingering (14 wpi) ?
32 stitches and 48 rows = 4 inches
in Roman Rib (see pattern)
US 2½ - 3.0 mm
160 - 190 yards (146 - 174 m)
One size to fit most.
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“Where’s my hat?” You’ll always have a good idea of
where to tell them to start looking with this hat. This is
the second in a series of lightweight hats that you can
easily carry in your coat pocket in case of an
unexpected chill.

This is a very simple knit with an easily memorized
stitch pattern, making it an ideal carry along project for
when you have a spare moment to knit. The stitch
pattern is super stretchy making this a one­-size­-fits­-
most knit. You can adjust the size by working with a
heavier yarn and larger needles, but then it may no
longer be a “pocket hat.”

This pattern uses knit, purl, and k2tog stitches.

This pattern has written and charted instructions.