This Kea style is a take off of the (sadly) now discontinued Nevi style which was superior in my opinion.  The soles of these has a sort of flower pattern (bottom of shoe) that I suppose does hug the surface better but the sole part (the part that comes in contact with the bottom of your foot) also has this flower pattern and is not as smooth and comfortable as the Nevi's were.  I wish they would bring back the Nevi! So I gave these 4 stars instead of 5 which I would give if they were the Nevi style.  All in all these are still pretty well made and for a flip-flop they do have a lot more support and control than a regular flip flop.
Please consider bringing back the more comfortable Nevi, Columbia.
Why change a good thing.
I still recommend these Kea style though.