Excellent Mattress.  Got it for my toddler for her big kid bed (and also to be able to lay by her and have room without being squished).  It's great-super comfortable, and in the beginning as I transitioned her, I had to lay down by her to get her to sleep.  Then, when I needed to get up to sneak away once she was asleep, it doesn't move or disturb her, so absolutely terrific.  Still, almost envious and now want to replace my mattress with this one because it's so comfortable!