I have a fallen arch in one foot due to an injury, a low arch in the other and suffer from plantar fasciatis.

I originally used custom made orthodics which were very, very expensive and very very limiting in shoe options.  A friend introduced me to MBTs and I was sold within trying out one pair.  No orthodics needed, I could purchase at least 2 pairs of shoes for the price of one set of orthodics and I could wear sandals, sneakers, dress shoes, boots... the options were astounding.  I could even after walking all day in shoes, remove them and walk pain free which I was not able to do even with orthodics.

Then MBT changed and the new "cooler" styles did not seem to fit me the way the old (alright somewhat goofy looking) shoes did.  I needed walking shoes for a vacation in Puerto Rico, I had a couple weeks to find something and after trying on over 9 pairs of MBTs, I finally decided to try these.  Wow.  They are incredibly light weight in comparison to MBTs or even other sandals of this type.  They fit my foot nicely since they are adjustable.  Most importantly I can walk all day in them pain free, remove them and continue to walk pain free barefoot till I go to bed in the evening.

I have no clue how they will hold up in the long run but right now I couldn't be happier.  The two points I will mention and they are not enough for me to take away a star is that unlike the MBTs, I do have to think about standing up straight with my shoulders back.  It is a strange thing to notice but when I wear my old MBTs, standing straight with my shoulders back is automatic, I don't even think about it, it happens.  With these, I have to remind myself or I slouch.  I also  must mention that these are not a sport sandal although they have the look of one.  The sole is not hard, I did not slip easily in them  but they certainly do not grip like a sport sandals does.

As to talking them on vacation, the first day I wore them we walked all day and my feet did not hurt at any time and stayed pain free the entire vacation.