Totally needs a spring box or something- 2 stars because I like the looks for the but can’t get passed the bed frame is not sufficient to hold the mattress - my new sealy posturepedic keeps sinking as you sit down in the side so I had to order a bunkie board another 100 for my mattress not to fall through on the sides when you sit ... bottom line says no box spring but it’s really not built properly  to support the mattress fully on top - it’s not about weak it’s about bad build design but still like the looks