Great shoe at a great price.  I had an ankle tendon injury that had not healed in 18 months.  i could not walk 1/4 mile without pain and swelling.  I now walk 5 to 8 miles at a time with these shoes.  I don't know if all the claims about extra calorie burn, better muscle tone etc. are valid, but I do know that the shoes make for a mechanically better way of walking.  Also, I have flat feet and cannot stand for long long periods of time in other shoes.  I can stand all day in these shoes without tiring.  I'm hooked and will buy many more MBTs.

Buyers beware.  There are many non-Amazon web sites on the net offering MBT shoes at 60 to 70% off list.  Many are located in Shanghai.  I ordered one pair from them and had very serious problems with fit and in trying to return the product.  They made claims on their web-site of free returns if you were not satisfied.  When I tried to return the shoes, they would not honor their return policy.  If you buy these shoes on the internet from a source other than Amazon, you may think you will save a buck but it may cost you in the end.