With this non-slip rug pad, I purchased two Capel area rugs for my 4-year old daughter's bedroom. The non-slip material was easy to cut to the shape of the rug and lays down flat. It doesn't add extra cushioning to the rug, but that's not what I needed. I just needed something that would keep the rugs from slipping on the wood laminate floor. Perhaps the best proof I can offer of how well the rugs stay in put -- though I'd rather she didn't do this...my daughter has taken to jumping from her bed to the rugs in some sort of test of physical strength (she has also been reading super hero books lately...) Amazingly, the rugs don't slip. 
The only downside is the plastic odor that the non-slip pad had when I took it out of its packaging. Obviously, nobody loves this...but the product does do the job it's supposed to do.