The knowledge that if I don't like it, I have 100 days to return it, hassle-free, and get all of my money back. I spent more money 19 years ago on my last mattress, and I like this one better!
I love it, because it is enough softness to feel great and at the same time support enough to not cause painful. We love it the first week of use, that we threw away the box, the week after that we will not be returning it. For me it is the first time in so many years that a mattress gave me a deep full nights sleep. Next order, will be the pillow hoping that it will meet my expectations.
I love the fact that I can get a good night's sleep. It's hard to explain, but I just sink in a tiny bit. Enough to feel comforted but not too much to feel hot. It's really just perfect.