I cannot believe how comfortable these boots are!  I go out walking the dog, and when I get home, the boots stay on around the house, just like a good pair of slippers. (I don't think I've ever owned a pair of boots that I couldn't wait to take off till now.) I don't mean to go into an overkill rave review, but these boots are that good. Other reviewers mentioned having some muscle soreness but I did not experience any. Also, I would not compare them to the other "toning shoes" out there.  They feel comfortable and stable on the foot.  They are a little roomy and do not come in half sizes, but no problem. I put and arch support in them--even though they don't need it--and I am walking without any bunion pain. (I could wear these to work a 12 hour shift if I had to!) Enough said!