About four years ago, my chiropractor recommended Crocs to me.  Instead, I found some that looked like Crocs, but weren't.  They were, however, cheap.  I wore them for about four years for gardening, cleaning up after the dogs, and that sort of thing.  They were pretty good.  Finally, they wore out and I found Crocs for a pretty good price on Amazon.  The difference is astounding.  Every step is like a foot massage, and they are much more comfortable than the old ones ever were.  They have little bumps on the insole so when I use them barefoot, I get really good stimulation on the sole of my foot.  I had no idea that there was such a difference.  My chiropractor was right.