Don't take anything "free." I opted to take the "free" adjustable base. However, when I returned the mattress, I found that the base could not be returned and they charged me $500 for something that I didn't want, and pretended to be generous in waiving the 20% restock charge for the mattress. When I bought the mattress, they bragged about the fact that I could return it, but I'm sure they never told me what it would cost. I will never go back.