I love this rug pad!  It is the softest pad that I have had.  I was putting together furniture on my rug last night and was kneeling last night for a very long time on the rug and rug pad and my knees didn't even hurt.  I also love that it is waterproof.  If something is spilled on the rug it doesn't soak through to the rug pad and soak into the rug pad too.  This will definitely be my go to rug pad from now on.  Buy it!