This is a waffle weave design. I missed at least one round. But I like the way it turned out, with this wonderful wool yarn. At 88 sts around, it fit me, but could stretch to a larger size. I looked at earlier projects of this hat, and found a link from CactusPurl’s project, showing how to make a fleece liner. http://www.p2designs.com/pdfs/easyfleecehat.pdf
It’s a one-page sewn pattern from P2 Designs.