This pattern was made with a Frog Tree worsted yarn as the main color and a Misti Alpaca heavy worsted/aran yarn as the contrasting color. Unfortunately, the yarn has been discontinued, but any heavy worsted/aran yarn should do. This difference in yarn weights increases the texture of the corrugated rib.

You will need about 70-75 yards of the heavier weight yarn and 95 yards of the main color- slightly less than one 50g skein for each color.