Wonder Woman Was The Inspiration For This Crazy-Cool Cowl – Show’s Over Boys!
The maker, Bonny Moseley (aka Bonny Knits), based it on the Hogan Infinity Scarf by Kristi Hogan, a pattern which you can download for free via Ravelry.
If you’re thinking about making one for yourself, there are a couple options for yarn. Artistic Yarn By Abi has a nice self-striping superwash here (it has sparkles).