This is the most comfortable mattress EVER… I was talked into getting a firm mattress because of my bad back… after 9 months of poor sleep and a grumpy attitude, being the rebel that I am, I bought this as a “I don’t want to go to lose my job for snapping on an idiot with my verbal judo” present… and it works!!! I’ve slept like a baby!! The idiots at work will not have to endure the verbal dressing down they’ve earned and I will stay gainfully employed. My pitbull isn’t tossing and turning anymore either… so that’s 80lbs of happy bouncing around as well… even my crotchety 11 chihuahua mix (el jefe) is so well rested he’s able to boss us around with ease after a great nights rest!! This mattress deserves 10 stars but alas my limit was 5…