What part of the body would you be using it for?
I have used a Infrared Heating Pad for many years now and I do think it helps me much more long term than the regular heating pads.
The effects go deeper into the body & improves cellular actions/ like cleansing of toxins.
I have the one linked below- it does have 3 solid but lightly padded sections, if you need a more flexible pad for smaller areas this style won't work very well.
I have mine on the back of my recliner and lean against it while watching tv. I use it mostly for upper back /shoulder/neck pain.
Dh used it often for his knee injury this summer also.
I bought it in 04 I believe, and no problems at all with pretty regular use, daily and even many x's a day early on.
http://www.amazon.com/Thermotex-Univ...1986904&sr=8-1
(if you scroll down that page there are many other brands & styles to compare.)
other sites with info/products -
http://www.thermotex.com/infrared.htm#key
http://www.therasage.com/Healing-Pad...elts_c_16.html