I have been wearing these sandals since 2009, and when Columbia bought out Molokini the quality of this sandal has declined greatly. I am about to try to return the 2nd and 3rd broken pair to Columbia. The failure is with the adhesive they use - the first pair that failed was in that a flap on the bottom came unglued, and the 2nd and 3rd pairs have failed at the top side flap - they have pulled out of the bottom.
I used to be more active than I am now, and when Molokini was the maker of this sandal I never once had a problem and I went through at least 10 sandals. I would say ok for light use, but don't walk in the mud or wet sand, etc, b/c the support may fail.