I now have 3 pair of 5 fingers.  KSO, KMD and another that is like a slipper. The KSO feels just a little smaller than the other two, although it still fits.  I like all three of them, but my favorite, and the most comfortable is the KMD.  It has some padding around the ankle area and seems like it is a little thicker.  I now wear them with socks because of the odor created when worn with only bare feet.  I wear one of the three pair every day, almost all day.  I have not used them for any real hiking, but wear them for my daily 2-mile walk with my dog.  I hardly know I have them on.<br />I believe these shoes have strengthened my feet and legs.  I've found that you have to use some muscles that aren't used with regular shoes and I believe that is helping a hammer toe situation that was getting worse.  If I purchase another pair, (which I most likely will), I will either get another pair of KMD or a pair like them.<br />I have washed them 3-4 times with no bad affects.  Let them dry in the sun.