My husband and I bought 2 of these mattresses for our 5 year old and 2 year old sons bunk beds. We were so amazingly surprised at the comfort of these mattresses. We have a Select Comfort Sleep Number Bed in our room, and we find ourselves asking each other if we want to sleep in the boys room on the bottom bunk tonight??? Luckily our boys usually sleep together on the top bunk, leaving the bottom temptingly empty! We love it and sleep in the boys room now at least once per week, just to sleep on their mattresses!This mattress has 4 pound memory foam which is the best you can get on Overstock right now. beats out the Serta, even though people will buy for the name.