Very sturdy, the concept of building it isn’t challenging. It’s very easy to understand as are the instructions. However squeezing in to the cabinet to screw the thing in is awful. Idk how a big person would do this. I expected the bottom thing to come by itself to screw in and then slide the drawers in but it has you screw it in to the cabinet with the drawer sticking out of the cabinet, after having screwed the polls in. And then after that you put the shelf thing on top. Screwing the thing down squeezing my body in to the cabinet involved a lot of sweating and cussing so good luck. Devise another plan on how you’re installing it because my method ain’t it. So glad to have made this useless big cabinet in to something better.