The sandal isn't sturdy and the bottom is too thin.  I felt barefoot when I wore them.  In fact, on concrete, my feet/toes were dusted in sand.
I won't wear them, but the return policy of the seller isn't conducive to fairness.  They were fresh out of the box but seller doesnt guarantee a refund. (It was subject to their approval). Additionally, Id have to pay the shipping.  It didn't seem in my best interest to take a chance with the return.