Reef flip flops, specifically the Mick Fanning model that has some cushioning and a bit of arch support.
If you need a more formal flip flop, Olukai makes some nice all leather models but they take some breaking in.
My wife bought me a pair of Teva flip flops while we were in the mountains and tubing almost every day
Not a huge fan, like my Reefs a lot better and the Teva flippers, thin bottom, Reefs have a lot more support with a thicker sole
I've been wearing Reefs for about the last 10+ years, by far my favorite shoe to run around town and the beach
And I get a pretty long life out of the Reefs