I ordered this foam mattress after considerable research on the memory foam mattresses. My sleep has been impaired for so long with a spring mattress that the price alone said "what do I have to loose". It arrived in less that 4 days, which was awesome since I had had enough of sleepless nights. My fiance wasn't available to take out the box, but I was determined my good night's sleep would start tonight! So it wasn't that heavy to my surprise. It inflated within minutes, minimum smell. I let it rest (about an hour) before puting the bedding on and I haven't regretted this purchase since! It there was a downside, it would be the mattress is so lightweight, that my flat sheet is easily pulled out from under the bottom - a small thing for a good night's rest. Great value for the price!