I needed a desk for my bed due to illness. This fit over my huge king, but the material is very poor so when you screw in the pieces, the wood cracks.  The wheels don't work well even on my smooth vinyl sheet flooring so it makes it painful and complex to move it up and down on the bed.  And most importantly the keyboard shelf, the screws stick out an inch and it will cut you when your legs are under if you move at all - be cautious of this.  Advice if you really need it, do not put keyboard shelf if you can avoid and be extremely cautious with screw and the wood.