I have two pair of these, one in navy and one in black. I've had them for several years and they are my go-to shoes for warm weather since I wear them without socks. I can't think of a single negative thing to say about them. They clean easily - I put mine in the washing machine with the rest of the dark-colored items. They're ready to wear as soon as they come out of the washer. I paid more than twice this current Overstock price for mine. I would never want to give these up.
Rupped on my little pinky toe for awhile, but got used to them very quickly. All in all they are a very comfortable lightweight sandal for being what I call plastic; even though they are not plastic. They are not leather is all I know.