I bought these so I could walk over the rocky ground where I am currently and haven't been disappointed.  I've worn them daily for about 6 months and they are still practically new.  My one wish is that Teva made them in half sizes; I wear a 10.5 and bought these in 11, and they're slightly big on my feet.  However, the sole is thick and the construction is very sturdy, but they're still very light, not much heavier than an all-foam thong sandal.  I expect these to last me years.