But, the underside is cardboard or paper and I don't think this is extra packing material.  It seems to be part of the table top itself.  I'm somewhat concerned how these will hold up.  The slate tops have been glazed or sealed so that's a plus and the shades of the stone are lovely.  The wrought iron seems pretty sturdy and I like how they stack.  I'm just a bit leery of the cardboard/paper underneath!