We have had the bunk bed for about 5 years now. I did add extra slats to the bed for extra support for bouncy kids (bought a set of IKEA twin slats for the bottom on clearance & doubled up the ones on top bunk). It has held up relatively well, with exception of a small crack on foot bed portion when leaned on too hard). I have also had to reiterate that it is not a jungle gym, so the kids have not been too rough with it (definitely no hanging off of the top bunk).
