This is an easy illusion knit hat. The observer will always see horizontal stripes on the outsides and vertical stripes in the center no matter which way the wearer turns their head.
This hat is made with two continuous strands of worsted weight yarn on u.s. size 4 needles. The sizes in this pattern are small 18”, medium 21” and large 24” with instructions on making in between sizes or even smaller or larger sizes.
This pattern is written out and also includes a chart that can be followed instead if preferred.

Materials:
-4 oz each of 2 colors of worsted weight yarn. For the hat featured on the cover I used Herrschners worsted 8 yearn in white and dark blue.
-U.S. Size 4 knitting needles, this hat is knit flat so you can use whatever kind you prefer.
-A yarn needle.

Gauge: 5 stitches + 8 rows in pattern = 1 inch

Size: small 18”, medium 21” and large 24” shown as s(m,l).

Abbreviations and stitches used:
k – knit
p – purl
slst – slip one stitch from the left needle to the right needle as if to knit.
mc – main color (lighter color)
cc – contrasting color (darker color)