Kinoki foot pads on a whim because of an infomercial I saw on television.
They're supposed to be a detox tool, and despite some speculation that they're a scam -- including a segment on 20/20 -- we decided to buy some. We considered the $20 fun money.
Long story short, they didn't seem to do anything. Over the course of a couple of weeks, I wore one pad on the bottom of a foot while I slept. In the morning, the pad was dark, supposedly because impurities had been removed from my system. They're supposed to lighten over time -- as you become more pure -- but I could detect no change in their coloration. And I felt no physical change at all over the course of the two weeks.
There are better ways to detox your body. Kinoki pads are just a fun novelty.
You can see the whole photo set, as well.