Nice looking mattress, I ordered the queen 12" and it quickly fully expanded. Be careful when you open it because it is SUPER compressed and will spring open fast and hard. There was some confusion because the add describes it as a hybrid mattress then in another area it says inner spring mattress.  It seems to be a hybrid but bigger inner springs than most hybrids I've experienced in the past.  It is thick however, it states that it has a 600lb capacity which I am just a quarter of and I sleep alone yet I can feel the springs at times.  I resolved this by adding a 3" foam topper.  Because of this issue, if you are heavier or if you're a couple- this mattress would probably be uncomfortable without a very thick topper.