Solid wood frame with a dark stain on what appears to be pine wood. Very sturdy. Mattress is thick and supportive, comfortable to sit on and not bad for sleeping. Smooth mechanism for sliding up and down. Assembly was quite simple with color dots making everything straightforward. Allen wrench key included but this was more of a chore, I had a screwdriver with selectable rotation that probably helped me do it twice as fast. Overall pleased. It's not an amazing long term piece but it's a good value and something that I'll use for several years and enjoy.