This mattress is so great! It's firm, but not too firm. We have a feather bed on top of it, and it is perfect! You get that initial sink-in, but then feel so much support. It came rather compact, and expanded in no time at all; no chemically smell, either. And FREE SHIPPING! What could be better? If we had gotten the same mattress from a retailer locally, it would have cost twice as much with an extra $110 for delivery. I love Overstock.com!