This mattress is both plush and supportive. Firm enough to support my spine in a neutral position when I sleep on my side, but plush enough to cushion and prevent pressure points at my hip and shoulder. 

It arrived vacuum compressed and rolled into a long narrow box. When we first unboxed it, I was not pleased with the comfort level at all, BUT over the next several hours, the mattress bounced back from its compressed state and became nice and full. It is so comfortable!