What kind of soles are these? On the Chaco website they have a choice of a Unaweep or a Pro sole. I am looking for the Pro Sole but the description you have for this shoe mentions Unaweep.

These are definitely the pro sole. If you compare the detail view of the sole of these Pro sandals to the same view of these Unaweeps (http://www.backcountry.com/chaco-z-2-unaweep-sandal-womens-cha0040?rr=t&cmp_id=&rrType=ClickCP&rrProd=CHA0040) you should be able to see the difference. You'll notice on this page's description where it says "sole type" it's called Vibram IdroGrip; on the other page it says Unaweep Vibram. If it's not clear from the photos alone, the Pro sole seems more meaty and hefty, and the Unaweep is more of an all-around design. Look for the "studs" in the middle of the pro sole and the "fingers" on the toe of the Unaweep.