No benefit to the specialized water sole
I got a pair of these to review on a kayak trip this sumer. My thoughts are that I just do not see the benefit of the yampa sole as to the regular z/2. I have found that the grip does not stick to wet rock any better than in my regular soled Z/2's and found the products to be a mirror of one another. If you do a lot of water sports this may be a sole sandal for you, but if you are buying these because you believe they are a water specific chaco, I suggest sticking with your old chaco's, because to me the difference was not notable. I usually wear my chaco's to all functions wet or dry and find them to work just fine. I wear a size 10.5 in a normal shoe and with chaco's the size 9 measures 11.2 inches which fits my foot that measures 10.75 from heal to captain (big toe) perfectly. If you wear an 11 I would go 10 and so on and so forth. I find that if wear an 10 in these I have too much extra space on the foot bed and end up toe kicking roots, rocks and other obstacles that should be easily passed.