I bought this mattress for my preschooler's new big kid bed. It was a great choice - very comfortable, no chemical smell, and it sprang to normal size immediately. It took the expected amount of time stated by Great Offer Stock for delivery and arrived well before the last day of the range for delivery. We are using it without a box spring and it's still comfortable. If you like very firm mattresses like I do, this is not for you, but you will still be able to sleep on it comfortably. I didn't buy this for me, so I'm happy with this purchase!