So, about a year ago I needed new sneakers for the gym.  I do a lot of fast-walking on the treadmill, and had heard about these goofy-type of sneakers that are shape-up or whatever weird name.  They look like you are standing on mini-rocker-shoes.  Anyhow, I was walking in the mall and stopped by a shoe store and saw these things on sale for like $40.  I mean, admittedly, they are kinda ugly.  Not ugly to me, but maybe ugly to kids.  Kids like them flashy shoes with the neon colors and the whiz-bang soles that look like they were squeezed out of a tube.  I was curious about these things and I tried them on.  I instantly fell in love with them!  SO awesome to walk in!  The sole is like SUPER thick and when you walk, you don't flex your foot, you just sort of roll with it.  It took a little while to get used to it but I learned to LOVE it.  I would also like to mention that these shoes have helped me with my foot pain.  I once stepped on a small stone in my bare feet that screwed up my tendons or whatever - my podiatrist had no clue - anyhow normal walking hurts a LOT over time.  But since your foot doesn't flex when walking in these, it's AWESOME.  I can use the treadmill FOREVER and not feel pain!
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I was recently at the doctor's office for a knee issue (I'm getting old, kids) and the physical therapist I spoke with took a look at my sneakers and laughed at the immense amount of wear and tear on them.  The insides were literally wearing away because I've worn them so much.  She said they were OK so long as you use them for what they were designed for - walking.  Soon after that appointment the sneakers have fallen apart so much that I have a hankerchief stuffed in one of them to keep my heel from rubbing against the plastic on the back.  Which brought me to this page to order another pair.  But - the ones I have, the ones I want, are over $100 here!  No way!  I should have bought another pair when I first bought them when they were cheap!  I've looked all over the internet, and this is the only place with my exact pair/color.  I did end up buying another pair, but for $50, and for a different color (black and tan I think?).  Anyhow, this is the ONLY shoe I felt compelled to buy another pair online for!  I love them and I love wearing them.  I can't speak for their shape-up abilities, I only know my feet feel good in them.  Good luck!