While I used to wear flip flops when I was a kid, i have avoided them pretty much my entire adult life. I really don't like the thong strap that is used to provide grip for what is basically an unstructured style of footwear.
Since I already have three pairs of Orthaheel shoes, I decided to revisit the flip flop.
These are  pretty well made and by no means the cheap rubber version from the old days. They have a very structured sole that provides support and relief for tired and sore feet. My arches are pretty much shot and I pronate badly. Orthaheel footwear manages to realign the foot and eliminates the pronation issue. I walk straighted and my spine is pulled back to proper alignment. My feet feel good and the sore foot issue has disappeared.
It took me about five days of wearing these shoes for 2 1/2 to 3 hours a day to break them. By day 5 I felt as though I had been wearing these a long time.
My only concern is that these flip flops appear to be well made, but other users have complained about wearing issues. At what I paid fir these I would hope I'd get sone reasonable wear time.