All of the really soft merino wools are in this category!
First up, Shepherd's Wool.
From Stonehedge Fiber Mill in Michigan, this is one of our favorites for softness. a 3-ply light worsted, this yarn is spun in the worsted method, which makes for a smooth yarn and that gives great stitch definition when worked up. Many of the colors are pretty heathers, and there are some great bold solids as well.
Contents: 100% domestic merino wool, and it's very soft!
Put up: twisted hank, wind before using. 250 yards/ 4 oz.
Gauge: label says 17 sts/ 4" on size 8 (5.0mm) needles, we also love it knit at a denser gauge of 20-21 sts/ 4" on 6's.
Hand wash, dry flat. Also felts great with soap, temperature change and agitation!