At one time it was firm, but now that I'm older I wake up stiff....i've been know to go sleep in Gs bed from time to time as my back just hurts too bad....but we can't send it back! It's a Casper, and a very nice mattress, but just to hard for me.
Soft here, too; a few years ago the hubby I broke down and got one of those fancy sleep mattress that moves, etc. LOVE it!! My dh gets disgusted as I can go to sleep in 5 minutes (or less) LOL