I wore out my KnitPicks circular, so I had to buy a new one for hats. I went with a metal Knitter’s Pride needle (affiliate link) that was highly-rated on Amazon. It has made my hat knitting much faster. The KnitPicks needle was actually a bit too long for hat knitting plus the wood gripped on the Mandala yarn a bit. This Boyfriend Beanie was to match Mom’s scarf.