This is exactly what I needed. Firm and supportive, great for back pain. Really improved my sleep! Shipped super fast once it was in stock.

Description says medium firm, but I'd place it more as a firm to extra firm. Overall great mattress for the price, no other real complaints.

The first picture is when I took it out of the package, and the rest were taken after a few hours. It was very easy to unwrap. The corners did not fully raise, but that doesn't bother me too much. It is definitely firmer than I expected, but is very comfortable to lay on. It supports my weight pretty well without sinking in. Very satisfied with it for the price. I bought two more for each of my daughters and they like it so far as well. I personally am wishing that I got the ten inch, though, because my sheets don't fit very well.

No marks, No stains, No "funny smells"
I have seen reviews with stains, smells, tears, etc. I experienced a wonderful product, wrapped SUPER tight, and the "funny smell", well new product smell? is all I smelt. Although I was weary thinking this thing may smell after reading some comments, IT DOES NOT!

So it has been 36 hours since the arrival of my mattress. Unboxing was a breeze (and I liked they included a letter opener to not damage the mattress with a knife) I rolled it out and let it start its thing. I read a review where someone got theirs to fully expand in 13 hours? I believe, and that was my goal. I put a fan facing the mattress, opened a window, and let it go. 5 hours passed and I was surprised to see it looked almost fully expanded I was ecstatic, and ready to feel this thing, but I waited. About 10 hours passed and I was getting tired, the wife was already sleeping on the couch, I checked on the mattress and it didn't look like much had changed since the 5 hour mark, but I said I don't even care I laid on it... just to feel it, and next thing I know my wife's waking me up in the morning asking why am I sleeping on this before it's ready. Oh yeah I did it and it was SOOOO comfy xD.

So now as a write this, I still don't believe it is fully expanded (36 hours), it's almost there but there is still a little sag to the container or what ever we call it. Although I don't know if it's supposed to be tight or not once fully expanded (seems like it would be). But that will not detour me from writing to let you know this is a GREAT mattress, not too cheap, yet not too pricey, and the MOST comfortable bed I have ever slept in, being not too firm, yet not too soft, and conforms to your body like a glove, you really don't even need a pillow for this unless your propping up. I am going to restrain from sleeping in this again until it has been its complete 72 hours or what ever it said, but I can tell you if you purchase this, you will not regret it.

This was a little rough to sleep on the first couple nights. I was upgrading from a spring mattress with a 4" memory foam topper to this mattress. I lucked out and saved the foam topper. It's great with it. Still more firm than the spring/foam combo, which is what I needed. But with the topper, it's perfect. If you're into super firm mattresses, this is it for you. But if you're looking for something a little more firm than what you have but not too firm, beware that this medium firm mattress is FIRM. Very firm. Next time I replace a mattress, I'd buy from this company again based on quality and timeliness, but I personally would go with a softer option.