Had some hesitation about ordering one of these mattresses in a box, but the decompression is amazing. Within minutes it had unfurled and puffed up to the full 10-inches as promised. The combination of wrapped springs and pillowtop is very comfortable, so for now at least we aren't even going to add a memory foam topper. No complaints even from our 6'3" teenage son athlete. We were pleased with the purchase, so we even bought a second one (we're furnishing an entire house).