Call Before Digging
Note about yarn: either DK or a light worsted weight yarn will work for this pattern as written. I found Springvale, while categorized as a worsted, worked well, the only difference being in row gauge, yeilding a hat about 1” longer than the one made with the Kathmandu DK. If you are using a light worsted weight yarn and would like it to be shorter, I’d recommend doing only three cable repeats instead of four in the cable section.
Note about gauge: use whatever needles necessary to get the gauge specified on the ball band of your yarn.