I had been accustomed to walking 2 miles a day a few times a weeks, but needed a new pair of good walking shoes. After reading all the glowing reviews for this shoe, I decided to splurge for a pair. I am a 8.5 shoe size and I ordered a size 8.5 and they are a good fit, but if I wore thick socks, they would be on the small side. They are super comfortable and really feel like you are walking on dry sand (heal sinks in/down and your arch is supported). The cushion in the middle of the shoe sole feels really good on my arches, and like others who have reviewed MBT's shoes, you can feel them working more muscles than in regular shoes. The only reason I did not give this shoe 5 stars is because after only one mile of walking in them: blisters! And yes, I wore socks (goldtoe, in fact). Look closely at the heal of the shoe; it is angled in towards the Achilles tendon and, to me, seems like a huge design flaw. Why would the "unshoe" be designed in a way that pinches your heal like crappy sneakers do? Now I can only wear them for short distances and, I guess, wait for them to break in (?). Or maybe my feet are just weird... Anyone else out there have this heal-pinch problem?