No sag or sink after 9 months. Firm to extra-firm mattress.
I have owned this for 9 months now and I'm very satisfied with this mattress, my 250 lbs. has been unable to induce any sag or sink. The item description is accurate, although"cushion-firm feel"may not be he best way to describe the lay, it is FIRM to extra-firm, but I like it that way... the lower star ratings, are for the most part, due to this mattress being too firm.