This is a simple to knit hat, knitted sideways and seamed up the back with no increases or decreases. If you can knit and purl, you can make this hat! I used roughly half of two contrasting balls of Vanna’s Choice worsted weight yarn for the black and gray version, and about a third of a skein each of three colors in red/black/white. The hat is very stretchy and will fit any size head from teen to adult.