This is the first bed-in-a-box and the first online mattress that we have purchased, so I was not sure what to expect. However, the reviews for this product are good overall, so we decided to go for it. We were so surprised when the mattress arrived in such a small box! It was only about 4' long and 1.5' square; we could not imagine how this would become a queen sized bed. After following the directions to remove the plastic wrap and unfold the mattress, it quickly expanded to full size. We tried it right away for a few minutes and were so pleased with the soft top and firm coils beneath. There is some initial smell to the mattress, and the instructions recommend waiting 48 hours to allow the mattress to fully expand, so we waited to try it for a full overnight test. The mattress cover is very soft and also clings nicely to keep sheets in place. I am both a back and side sleeper and was super comfortable in both positions through the night. The hybrid foam layer provides a very nice sink, but is not suffocating or hot, like some foam products can be. I have some back and hip pains that can pop up when sleeping on vacation bed, or in a hotel room, but the underlying support with this mattress did not cause these to flare up. Overall, we are very pleased that we made this purchase and would recommend it to others! Also, the initial mattress smell was mostly gone within the 48-hour waiting period.