Knitted up on size 9 needles using Katia Reno Plus (81% wool, 7% mohair, 7% acrylic, and 5% nylon), this was a super quick knit. Nice and chunky for the winter, too. I'll have to make the little guy wear his on days that I don't wear mine, since mother-son matching hats are a little over the top, even for me. ;)