The bed frame is coated in something that makes the mattress slide right off of the frame when my son (11) try’s to get into bed. 

I had to buy rolls of grip mats to stick between the mattress and the frame to try and make it stop slipping. This seems to be working for now, but I don’t know about long term. 

Its more of a hassle to take it apart, re-box it, and pay fees to send it back. 

I’ll keep trying to figure out a solution.