The mattress arrived in a few days.  It was boxed and shrink wrapped.  After a few careful snips of the wrapping, the mattress literally unfolded on the floor and began its expansion.  Despite having no odor at all (unlike reviews I have read about other brand mattresses), I shut the door and waited until the next morning to see how the mattress faired up to its description.  Much to my delight, it did raise the full 10" in height.  I bought this particular mattress for a pop up trundle bed that had an 8" high mattress.  However, when the trundle part popped up the second 8" mattress which was supposed to meet the upper mattress to form a queen sized bed was a good two inches lower than the other mattress.  So, this 10" mattress did the trick and now forms a perfect queen sized bed when next to the other mattress.  The mattress has a wonderful plush feel and comes with a quality cover on it.  All in all, I am happy with the quality of this product.