This mattress is sheer heaven! Having disc herniations, I had resorted to sleeping on an air mattress. After my second air mattress failed me in a matter of 3 months, my plan was to buy a coiled mattress. When I saw the price that Overstock was offering for this memory foam mattress, I read the reviews which were very helpful and convincing. Mine arrived in just 4 days! The box is about 6' long and 18" wide, and I'm happy that another reviewer warns about it being rolled up. It actually made it very easy for me to handle by myself without needing any help. Within seconds of peeling off the wrapping, it started to reinflate itself. The packing says that it takes a full 48-72 hours to come back to it's original size before it was decompressed, but mine was plump and plush within a few hours! Sleeping on it is absolute heaven. Thanks Overstock for making this luxury so affordable. I recomend it highly!