I have been using the gold Zidiz pads for a few days now and have had some great results. Backpain I couldn't get rid -nope, the chiropractor couldn't ease the pain- has litterally become non-existant. I don't know if its due to the far-infrared from the tourmaline powder in the pads, but whatever it is it's definitely working for me. Another thing I have noticed is that my legs feel much lighter.