My friend Stephanie bought some sock yarn so that I could make her a pair. It's Regia Cotton Color 4 fach haltbar. I've used Regia 4fach before, though not Cotton Color, so it should be no problem.
Being a type of yarn I've never seen before, I took a good look at the label. This yarn lists a number of features. Most of them are usual features (machine washable, non-felting, retains its shape while wearing). Then there's this one: air conditioning. Air conditioning?? That's a new one on me. I'm not exactly sure what that's supposed to mean, but in the weather we've been having, air conditioning is a good feature.
[Listening to: "Naked As We Came" by Iron & Wine]