The beds are very sturdy.The only design fault they have is the straight horizontal ladders built into the bunk bed's design. A separate ladder that would allow access to the top bunk at an angel would have been much smarter. But it gets 5 stars because we are both sleeping again.Twin beds were not an option for us due to additional floor plan space they required.(Two twin mattresses give you the size of a king bed) I have to take a very high dose of a blood thinner & my husband's sleep patterns are just too dangerous. I kept getting hematoma bruises from being kicked, kneed, elbowed & hit as he is a very active sleep whose PTSD only surfaces in his sleep.