The manufacturer of the finish that's on my hardwood floors recommended ONLY all natural rubber rug pads. I had a very difficult time locating them, as all the local stores sell only those coated with PVC, which can discolor hard wood floors. I looked for months and then I found you online! I was very pleased when my rug pads arrived. The shipping was quick, the service was great and the quality of the rug pads was much better than I expected! Nice thick quality natural rubber pads. Thanks!

This is probably the best rug pad out there for radiant heat floors. It allows heat to rise through and doesn't interact with the floor surface in any way. It's a bit pricey, but definitely worth it.