Both Cascade Ecological Wool, and Eco+ are basically the same thing. The only difference is that the Eco+ has been dyed, and the Ecological Wool is left in its natural color. Ecological was so extremely popular, that Cascade released Eco+ so that we'd all have even more colors to play with. Each gigantic hank of yarn contains 478 yards of 100% Peruvian Highland Wool. That's a LOT of wool for your money. The yarn knits or crochets up quickly whether you use it at an Aran weight gauge, or as a Bulky. This yarn is handwash, but it's worth the soak, because you'll come back again and again to whatever you make in this lovely basic.