I read the reviews and decided on the Durable Carpet Pad. It is thick and gives the rug a soft comfortable feel. This comes folded into a bundle, and it was challenging to get the 1st one flattened out and the rug on top evenly. The second one, I decided to unfold and roll up for a few days. this went much smoother. I trimmed the excess by marking with a red marker on the felt side and cutting with regular Fisker scissors. That worked fine and it was not hard to cut. The left over pieces from trimming I put under my treadmill to absorb the noise & stress on the hardwood floor. Over all happy with the purchase, delivery was quick pads were packaged in very heavy plastic sheeting and they didn't have any bad smells.
Martha