Great in theory.  Must have middle vertical support (from head to toe) other wise the wooden 2 x 4 planks which are wrapped and sewn in the gray fabric bendbounce when you gently roll to the middle of the bed.  I spent several frustrated nights with 12 my bed on the floor (wvarious inclined angles) until I engineered something better...a metal frame with center support from the garage.  My recommendation is to buy box springs instead.  Gave an additional star (from 1 to 2) incase I was an uninformed consumer who didnt fully understand what she purchased.