The bed frame is sturdy however the hex head bolts strip easily and the allen wrench bent trying to tighten the bolts.  The desk, bookcase, and drawers are all mdf. Seems to be sturdy enough.  If you get the frame before the other pieces wait to put the slats in because you have to add pieces and will have to remove them if you don’t.  Decent loft bed set overall. Not sure it is worth the price.   Time will tell.