mbt shoes are
www.swissmasai.com they take the pressure off your joints, back and stuff. since surgery, i can't wear anything else.
they are like 250 bucks, but the good thing is, they last for years, and you can get them resoled for only 50 bucks... so well worth it, especially since it helps with the pain.
they are mimicking walking in sand...that is where the technology came about. when i first wore them, i was sore...they say to wear them a littl e bit a day to get used to them. but i was sore in the muscles that make you stand up straight...but about after a week, i was good, and am loving them since!!!!!