Fully made of particle board and every single time I put a screw in, it damaged the particle board. Its so so cheap and yet almost 300 - but why! Dont lose any pieces because they do not provide a single extra screw or anything. Everything else Ive put together gives at least 1 extra of everything...not this! It will stand for now and it does hold stuff...but the quality is terrible and I will for sure be upgrading at some point.