I bought this shoe to wear in my aquacise class but encountered a problem after 5 minutes. The inner soles of the shoe are not attached in anyway and so start to shift, so much so that they end up bunched in the toe and/or folding over my toes. My solution was to remove the inner soles but of course this means less comfort. Other than this, the shoes fit nicely and work well in water. Another lady in my class experienced the exact same issue. We think that waterproof glue to anchor the inner soles might work - if we can find some!