The bottom slider bed fits like a glove underneath so eventually it will scratch the sides with use but the large outer panel will hide that so it fine. The wood pins that hold the beds top/bottom together could have been a hard durable plastic but they’ll do the job for a while. Eventually i plan on getting something more durable for my own peace of mind but right now my kids are small, and the modification should be very easy I won’t even have to disassemble it all. The assembly was rather easy and the finish was really nice it surprised me. Very happy with this purchase. My kids room was small and I thought this would take all their space but it’s actually quite compact, it was perfect. I think anyone would be happy with this bunk bed.