The ball band says that this should be knit as 4-ply, but it’s heavier than most 4-ply yarns.

From the webpage: “We have used Falkland Islands organic Corriedale, both alone to make a white yarn and then blended with 15% British Manx, Black Welsh Mountain or Hebridean organic fleece to make three subtle pale shades. Then of course, we got enthusiastic, so we have gilded the lily by organically over-dyeing each of the blends with pink, blue, purple or turquoise. The result is a range of 4 natural and 4 over-dyed shades in each of DK and 4-ply.”