Be careful and be aware that if you are knitting something someone will wear with Cascade 128 it will grow huge after washing and even a spin in the dryer will not return it to it's pre-washed shape. Please read the reviews on Ravelry before using this yarn!
I needed a chunky yarn, washable, and soft to make Jared Flood's fabulous Wool Leaves baby blanket. Cascade 128 Superwash did the trick. It was wonderful to work with, and the mom-to-be not a knitter thought it was the softest most baby-delious blanket ever!