This rug pad is THICK.  I needed something with cushion because I was worried about my kids jumping off their bunk bed onto our hardwood.  This, with a wool rug, feels like a gymnastic mat.  It is a serious step from the hardwood and we have tripped a few times.  The pad seem great quality though.  It is cut right to the edge of my 4 x 6 rug, so it can stick out slightly if not *perfectly* aligned.  Overall very happy, but I should have ordered a thinner one.