Unpacked them and poof! Bulked up and fit perfectly on the twins bunk beds we bought them. Each of their beds has a futon couch underneath. It folds out nicely and is perfect! (full size) 
Even folded back into a couch, it does well and feels very sturdy!
Does have an odd smell though (why its a 4 star and not 5) Im hoping the smell will go away.