Sizes: S/M (Teen), M/L (Adult)

Materials needed:
2 sets US #3/3.25mm circular needles + extra “holder” needles

Description from Knitty.com:

This sock was designed to be knit on two circular needles. The truly courageous will cast-on and work both socks at the same time — oooh la-la!

After joining your stitches, the first circular needle has what will be your heel stitches, the second holds the instep stitches. The lace pattern consists of two rows, endlessly repeated over the instep stitches only.

A bit about the 2 socks/2 needles approach: You will cast on the for the first sock, divide the stitches between the needles, then cast on for the second sock with your second skein of yarn and divide those stitches. Both socks are worked simultaneously, working a round on the first, then a round on the second.

When it’s time to turn the heel, you will work one sock at a time until you’ve picked up the gusset stitches. Then move on to the next sock (where you’ll turn the heel and pick up the gusset stitches). At this point you’re back to working both socks in tandem until the end.