Ok, so my wife got Ghostbed pillows about 2-3 years ago and loves them just as much today as she did when they came in the mail. We moved and in the process, the movers got gas all over our old mattress. So, went online and ordered a GhostBed mattress. We already had an adjustable base and it works perfectly with it! My wife is a light sleeper and whenever a dog or myself shifted in bed, she'd wake with our old mattress.To test the shock absorption of this one, we let our 7 year old do his best to make us feel him jumping on it. WE FELT NOTHING! The mattress is medium firmness to a little more. I'd give a 6 or 7 on the firmness scale. We've slept so well that I was happy to tell the world about it. Would definitely recommend!