I believe the undyed hank is about 9 oz at approximately 12 wpi. It seems to range from fine fingering weight to bulky, with the majority at about sport weight. The green hank is somewhere around 5 oz, and approximately 16 wpi (I think). It also ranges in size, but I think it is more even. I discovered Andean plying halfway through, so some parts are more even than others.
I can't wait to knit these up -- I'm thinking about making a cowl with the green skein and the Sheep Wrap for the white. I'm trying to force myself to finish a couple of other projects before I get started, though!