The pattern, Bargello Hat, is available as a free. I used two cottons, the solid is I Love This Cotton in Aqua and the variegated is Universal Yarn Inc. Cotton Supremem Batik in Watermelon on a size 8 16" circular needle and a set of 8 dpns. Stitches used are knit, purl, and k2tog. The pattern is written to be knit flat and seamed but I prefer knitting in-the-round. The necessarily adjustments were easy enough to make as the hat is simple four rounds knit, four rounds purl. I usually work from my iPad, but instead printed a copy of the pattern and then made note of the round changes when shaping the top.
The pattern worked up quickly,even with all the yarn changes, and I plan to make another, adult sized in the near future.