Criticisms of these shoes have generally been correct.  The shoe inserts come out easily - but that has its benefits as you can dry the shoes faster.  The drains in the form of netting on the sides of the shoe do allow sand in, and it is impossible to get out without taking your shoes off.  Additionally on the negative features, the netting on the sides tear easily if rubbed against anything hard or sharp.  On the positive side, the shoes are generally comfortable to walk in, they have good traction, and they fit snugly with the pull-tie.  Overall, the shoe is a good value for use in a water vessel like a canoe, but I wouldn't recommend wearing these for long walks on sandy or rocky beaches.