So I constantly wear flip flops, and the majority of them do nothing in terms of support for my feet. These are very cute and they give a great deal of support, which can feel uncomfortable at first if you are used to the unsupportive ones. I think they conform to the foot after a very short time, for me, it was after the first day wearing them. They were true to size with great arch support. I can take walks in them without my feet aching...my first walk with them left my feet and ankles pain free.
They are so comfy that I have been getting rid of all of my flip flops with a flat sole, keeping only these and my adidas flip flops with fit foam  for extended walking periods.