i find this extremely comfortable. i like very firm mattresses and did not find this one surprisingly hard (as other reviews suggested). you can always add a topper for softness, but you can't fix a mattress that lacks support. this one is the closest to sleeping on a cloud that i've had. i've had it for >6mo now and it is holding up well. it has a tiny bit of a memory foam feel, but you don't really sink in. this is what i was looking for: foam support rather than memory foam. took a few days to fully expand. nice, plain cover and it can be flipped. i don't remember whether there was an odor at first, if so it didn't last more than a few days. tremendous deal for the price.