Now that I've finished my beret and my sweater, these are what I'm knitting next!  If you want to knit them, too, you'll need size 10 double-pointed needles, and a fine weight yarn with which you can knit double-stranded [pattern here].  By the way, the site where these originate from is in two languages:  the first is obviously English, but I can't figure out the other one.  Is it Norwegian, Swedish, Dutch?  If you recognize it, please let me know!  [via Whip Up]