These are great MBTs. If you've worn MBTs before, they run a little big, so if you're iffy on the size go down. If you haven't, I highly recommend them, especially if you're on your feet a lot. They are the most supportive, comfortable shoes I've ever had. The rocking takes a little getting used to, but I've been wearing them for years and don't notice it anymore. I don't wear these to "tone" I wear them because they put my body in a proper alignment and prevent the pain in my knees and low back from standing 9+ hours a day.