In Eco Wool, Cascade Yarns has sourced beautiful, un-dyed colors from a variety of sheep to make these gorgeous yarns. This is a great yarn for anything that takes your fancy. Eco Wool knits up to a variety of gauges due to its lofty nature. Knit it up like worsted for a denser, sturdy fabric or looser for a light, insulating wrap or blanket. Also available in naturally dyed colors under Eco+.