Not solid wood. Throughout the entire description, it calls it solid wood. Side frame rails are made of particle board and they're split in the middle so you have to bolt them together to a support made of particle board, centerpiece of headboard is particle board as well.  For clarity, it does have several pieces of solid wood in it, yes. But is it overall a solid wood bed? No. Supports on the side rails are made of particle board as well. If I had known this, there's no way I would have bought it. Center support for the bed spine does not even reach the ends, it stops before the last rails. Since it's so hard to return, we'll just keep it for a spare, but I wish they wouldn't have said it was solid wood.