We waited and watched - I got the kids a Queen size mattress last year - They LOVE it. No indentations after a year of use - 2 adults and two little kids! So we finally got one for ourselves. The side seems awfully soft, BUT when you lay on it your whole body is equally supported and it feels firm, but not hard. We are very pleased with the purchase - So much cheaper than a regular mattress and MUCH more comfortable. Glad me finally made the move! FYI we had a 4 " box spring from previous set -Put the new mattress right on top - All is well!