The KD foundation is firm and sturdy which is exactly what you want under a mattress. The box it came in was extremely manageable compared to a traditional king size boxspring. I was easily able to carry it up a flight of stairs and into the bedroom for assembly. I've seen some complaints about the wood being dirty and splitting etc., but does it really matter? The foundation is rock solid once fully assembled, and after putting the cover on it, you can't even see the materials. I have no complaints and the cover matches our Ghostbed Luxe nicely. A word of advice, use a drill to put this thing together. The battery for my drill was dead and I was too lazy to wait for it to charge so I used a regular phillips screwdriver. It was doable, but I ended up with some pretty nasty blisters. Charge your drill.