This is an earwarmer/ear band that is knitted in the round. It’s a cabled rib pattern that is easy to adjust for size.

It’s also relatively quick for a cable pattern—and even quicker if you don’t use a cable needle to do the right-leaning cable. Google search some videos on how to do cables without a cable needle, and you’ll see just how quick and easy it is! And yeah it’s reversible—it looks cool on either side!