I really wanted to like this, but this polypropylene rug was just a bit too “cheap” looking for me.  I bought the grey with gold accents.  Unfortunately the gold was very much a yellow gold and certainly not as metallic as I thought it would be.  The thickness, however, was a pleasant surprise.  While certainly not as luxe as wool, it was comfortable to walk on.  An underpass would still be a good idea though as it doesn’t have any grip on the backing and is fairly light, so it will move around.  If the gold weren’t so yellow, I probably would have kept it.