Made of real wood.   Very solid bed.  Have not slept on it yet since waiting for mattress to be delivered.
It indicates "do not need a box spring" but slates are 3 inches apart so need something flat to support the mattress.  (Otherwise the mattress will not be covered under its warranty and would definitely ruin the mattress.)    Therefore had to buy a Bunkie board.   Combination of bunkie board and mattress need 10 inches.