Much more sturdier than I expected.  It's very well made and heavy duty,  not flimsy at all. You can mount it or hang it on the door.  Also has hooks that attach (stick on) on the doir so the organizer stays firm without banging on the door every time you open or close the door. Comes with x3 extra brackets that can be used to prevent tall items from falling off. We did not use them. Very happy with the product :)