I purchased size 9 (women) in Sour Tart/Black color. My usual size for flip flops is 9 and these fit true to size.
Pros: Insoles are extremely comfortable. I feel like they massage my foot from underneath. I work in retail 8h a day and my feet still feel comfortable in the end of the day.
They also look great on me and the Sour Tart green color pops.
Cons: The strap that goes between your fingers and the whole upper green strap hurt my fingers to the blood. I heard that these need to break into so I’m wearing them only every other day. For sure, they are not comfortable straight out of the package.
If the strap was more skin-friendly and didn’t hurt me, I would get these shoes in every color.