Opal is well known for creating yarn for addictive knits and eye-catching socks. The German company donates proceeds from the sale of the Rainforest collection to foundations that save rainforest habitats from development and clear-cutting. Try one or several of these self-patterning yarns as you knit in the round. Available in 4-pply and 6-ply. Size is approximately 420 meters/ 100g ball. 75% superwash wool, 25% polyamide.