Very heavy pressboard.. about 100lbs. If I were by myself would’ve had to take it apart where it was delivered outside to bring in but two of us wrestled it just inside the door and carried it piece by piece upstairs to put together there. Went together easy with good instructions. Will hold lots. The only thing I’m not liking is the space you can see in, between the top and bottom of the drawers. Inexpensive and will do the trick for an attic bedroom.