Cascade Ecological Wool (AKA Eco Wool) is 100% Natural Peruvian Wool. This incredible natural wool is undyed - the colors are just as they come from the sheep. Soft and wearable, this wool lends itself to either garments or felting, in solids or marled colors. 3.5 - 4 stitches to the inch. An amazing, heavy worsted/Aran-weight yarn in big, generous skeins of 478 yards at an unbelievably low price. What a value!