Very disappointing that this bed only comes with 3 slats!!!!  Make sure you get a box spring or buy additional slats.  The mattress will not be supported.  I had luckily bought a box spring that is sitting on the floor under the bed supporting it.   My toddler was on it with the 3 slats and no chance it would hold any one weighing more than 40 pounds plus a twin mattress.  Also one of the slats we did receive came cracked.  Overall a cute bed but for the price I would have hoped for a bit more.