Seamount is a decadent combination of 70% merino, 15% silk and 15% yak. It is a 3 ply worsted spun yarn with 290 yards/100g. Technically this makes the yarn a DK weight, but we strongly recommend knitting it at closer to a worsted gauge, as it makes a beautiful fabric between 18-21 stitches per 4" (and bonus - extra yardage for your worsted project, making it more affordable). It's impossibly soft and has a beautiful subtle halo from the yak. The base yarn is grey, so colors are deep and rich with the grey undertone.