I ordered a twin. Ok so this mattress took 8 or so days to get to me, not a problem, I decided not to let the mattress set (firm up) let it sit for 16 hours. DON'T DO THIS, it is so soft and tempting to do but YOU WILL sink inside, I'm only 160lbs, my first night I ended up inside this mattress. So I let it set for 2 days after my first night and BAM! nice and firmed up. As the description states FIRMNESS VARIES. When the package arrives it will be vacuum sealed and rolled up to fit inside a rather large box, (don't picture the ****** box foam mattresses I did) when you cut open the vacuums sealed mattress it will immediately begin to form. It is made by RIO Home Fashions, unsure if this was stated. The stench from the mattress is horrific. Smells of paint thinner. Your advised to not put any chemical spray like lysol or glade, I did and I regret it, the smell sticks and ends up getting all over you while you sleep (the synthetic smell that is). The scented spray is better than the paint thinner smell however; I would suggest let it air out for 48 hours with a fan assisting it, and put fresh blankets, sheets, and pillows cases on the bed after the 48 hours. Don't dress up the mattress once you get it, the smell will transfer.
Now I have been a spring mattress sleeper for all my life, I'm 19, when I made the switch it felt odd to be supported by a mattress. It made me not like it as it was uncomfortable to be cushioned and not being allowed to toss around, let this grow on you; and you will be rewarded with better night sleeps, no rolling around, so that pillow on your bed wont end up across the room. You will sleep better. I finally am. This might be an off brand but from trying out serta, temperpedic, and other various brands they all seem to me to feel the same. Yea firmness varies but come on this is a great deal.
I would recommend this product to anyone who wants to break into a new way of sleeping.