UPDATE.
Terrible
Less than a month later, it already sags! I’m 150 lbs so I can’t image this mattress lasting.  I am dropping this down to 1 star

Not firm. 
I really needed a firm bed, but I found this with squishy and soft. I was hoping after sometime it would firm up when it expanded.  Setting it up was easy since it was compressed. I specifically needed a firm mattress since I have back issues so I guess we’ll have to see, but the first night sleeping on it felt soft. The only positive is that the cover is very soft. i’m giving a four stars because I don’t feel like it was firm as a description states.￼￼