The insole comes out, and that changes what this shoe is
Aetrex shapes the same Signature Arch Support into this footbed that's in their sandals: a rise at the apex of the arch, a cupped heel, molded in rather than glued on. They say it's there to help relieve heel and arch pain.
The difference here is that it lifts out. Aetrex lists this style as Removable Insole: Yes, and their sandals and cork styles as no.
That's worth more than it sounds. It means the shoe isn't a finished answer, it's a platform. If the built-in support turns out not to be enough for your foot, you pull the insole and put a real orthotic in, and you keep the shoe. Most of what gets sold as comfort footwear doesn't give you that second move.