While these might not be the most attractive sandals in the world (look like Teva sandals in a way) they are so so comfortable and effective.  I own four pair of MBT shoes and sandals an have had them for 3-4 years now.  They are the best and worth every penny spent.  These were the ORIGINAL rocker type of exercise shoes.  Everyone including Sketcher and Reebok has come out with exercise sandals ... even FitFlop.  I have not walked in the Sketcher version but actually, I have felt them and tried them on and did not find them near as solid as my MBT's.  I believe that you get what you pay for in shoes.  Taking care of feet is vital to health and these shoes help to keep hips and back aligned.

I have facet joint syndrome, MS and other arthritic issues in my back and neck.  These are just a great shoe to help maintain posture (they help you stand up straight) and take some of the pressure of the back and even the knees.

They take a bit of getting used to and they ARE exercise to use and will effect balance.  If balance issues are a problem or if you have one knee that is much worse than the other (a seriously affected  gait), these might be harder to use.  I saw this with my Mom who is in her 70's and has a severe anterior gait with one of her knees.  These were not an effective option and she prefers wearing Birkenstock sandals for over all foot health.  After having worn Birkenstock sandals for years myself, the MBT's serve a more therapeutic purpose.  They are nice and I really enjoy all of mine.  I have both a tan and black Kisumu.