I'm 56, and generally walk two to three miles 4-5 times a week.  I've done this for many years now, and worn many different brands of shoes, mostly seeking comfort.  These are hands down the best I've ever had on my feet! Within the first few minutes I could really feel a difference in my walking.  My posture was a bit more upright, and my quads (front of thighs) felt a new little "burn" going on.  It also feels as if your routine has been kick-started a bit.  The best part was the extreme comfort I felt in these.  They're like walking on little trampolines!  You just get this beautiful roll to your foot, while also feeling like each step is bouncing you along on a big cloud.  Plus, your whole foot feels padded for extra comfort.

If you fear you'll be off balance....don't.  It took me about a minute of walking around my house to get used to these.  I also use them on my treadmill several times a week, as well as outside walking.  I've been singing these shoes praises so much that my husband just bought himself a pair from Amazon yesterday, and I bought another pair in white.

I can't say enough good things about these shoes, and this is coming from someone who has worn every brand of good walkers out there.  Don't hesitate to get yourself a pair for fitness walking, being on your feet at your job, or for just plain ol' comfort.  They are outstanding!