I've been wearing them for 21 months now and I feel great. However, after wearing them more or less every other day, the plastic soles split completely in half, edge to edge, about halfway between the toe and instep. Tear through, to the point where the sock moves on its own, held only by the skin, and if it's even a little wet on the outside, my socks get wet. They're comfortable enough that I buy other pairs, but I've rarely had a pair of shoes wear out so quickly.