[This review was collected as part of a promotion.] This pad works very well for hardwood floors. I was worried about our new rug sliding around when my dog gets hyper and runs indoors, but the rug mat works perfectly to keep it in place. It is smaller than our rug and doesn't have quite the same proportions but this hasn't been a problem. I was worried at first because it feels thick and durable, but it's not so thick that its outline becomes visible under the rug. It is perfectly invisible.