Solid Koroi wood only on two sides, the rest is Garjan wood, bed base is Garjan wood, heavy sides and base, I have used it for 14 years, it will look like new if polished, no problems. 6ft * 7ft, I needed a big bed before because I had a small child. Now I need a smaller one, so I will sell it. It will not break even if you jump on it 8/10 times.