Weird at first, but after wearing a while you will LOVE this one. No doubt is the most comfortable shoe in this category I ever had. Not so sure about the conditioning powers, I can't tell because I workout 5 times a week and the results of my overall toning can also be attribute to that, so I have no opinion regarding that, but if you are looking for a inovative pair of sneakers that are comfortable enough to wear all day long, do it!!!
PS: Again, it takes a while for you to feel the comfortable factor, but you will...
PS1: Size runs (VERY) small, I bought 1/2 size bigger and mine fits well.
PS2: My teenager daughter actually said my new sneakers look cool and cute  (I guess this one is NOT your typical mom's sneakers, yay!!!!)