Pattern: Sidewinders: a Perpensockular Pattern available for free on NonaKnits.
Yarn: Twinkle Toes by Chameleon Colorworks
50% Merino, 50% Tencel
1 skein (approx 320 yards) in colorway Ophelia
Needle size: US 2
The pattern is available as a sequence of blog entries complete with photos and bonus motivational pep talks. It's comprehensive and well written (thanks, Nona!). I would suggest copy/pasting into a word processing document to make printing a heck of a lot easier. Unless you like knitting in front of a computer.
I usually don't bother doing a gauge swatch for socks since I can just try'em on as I go and modify as needed (most sock patterns come in a limited range of sizes anyway so modifications are usually needed for a customized fit). But this sock comes in 12! sizes and is knit in one piece flat. And then grafted together in the back like a corset for your calves/ankles/feet. So in this case, gauge does matter.
RS view: cuff is to the left/ toes to the right
Actually, the whole thing kind of reminds me of a flying squirrel.
WS view: a flying squirrel with a hoodie
The hoodie is where the toes go.
Grafting's a pain in the ass. When done properly, it can be like knitting magic (no seam). When done improperly, it just looks like a hot mess. Trouble is, that it gets so rhythmic (knit off, purl on, purl off, knit on) that I lose track of where I am. Apparently, there is a version of these socks that decreases the amount of grafting - maybe I'll have to try that at a later date.