Update: Downgrading to 1 star since they don't seem to care about quality control / product defect problems and have been completely non-responsive.

For the most part, I like the design of these - other than mesh on the insoles which is too rough and abrasive. But there is a serious lack of consistency in them. They are MUCH larger than another very similar pair of water shoes from the same manufacturer. To be more specific, although the length is only very slightly longer, it is MUCH wider and also MUCH taller. Lastly, another quality control problem was that the rubber bottom on one of them was warped - in other words, the shoe didn't lay perfectly flat on the floor, it slightly twisted from front to back.