Very Unstable. Oliver is 52 lbs, it’s rated for 75lbs. It could just be him, but he’s nervous using it because it’s so unstable-it literally shakes. The quality is awesome I just think it’s so light weight with the foam, it’s just how it is. He loves the bed, and after a month of even using treats on each step, he still won’t use it. If I had to purchase another, I would get one made out of wood.