A word of caution: don't do what I did! When I first received this rug pad, I thought nothing of it and just put it under my rug. But when I noticed that my rug just kept moving around I thought that this rug pad didn't work at all. Fortunately, I'm very inquisitive and after looking closer at the rug pad I wondered if I was supposed to do something with it before just putting it in place. Sure enough, I needed to remove a film to expose the sticky side (on both sides). And voila'! It now works like a charm. My rug doesn't budge!