This is a piece of junk. There are raw screws that show right on the top of the arms of the bed. The trundle piece doesn't slide, and it is held together with a piece of cardboard. Even without a mattress sitting on the primary bed, the trundle slats twist and catch as you try to slide it. Forget pulling it out if you have a mattress on top. It is only a short matter of time before the cheap wood cracks in the frame. Also, a normal mattress comes to the top of the side rail. If you stack two, they are taller than the bed. I strongly advise against purchasing this product.