The pattern is called Reversible Rib, Reversible Hat by Sarah Penderson and is a free download from Ravelry. In my haste to mail the hat I failed to take a picture of the inside of the hat so you will have to trust me - it is reversible.
Lion Brand yarns. The pattern is a simple cable which I found at Ravelry, in the middle of the night, and am happy I memorized it because I did not save it on my laptop, did not bookmark the blog it came from, and have spent a while trying to find it to mention it here, to no avail. Dang it.
There are many sewing projects I would love to work on right now, but deadlines are deadlines. Since pattern writing is not something I can do at night when the brain needs a break, knitting provides a soothing repetition of steps and the outcome is often soft, wearable, and quick.
Here's hoping you are having a fun and productive day!