Sturdy Frame:The bed is long-lasting with frame made of solid metal frame structure and metal slats support,No box spring needed,This bed frame is capable of supporting up to 500 LBS,Which is built to withstand the test of time. Sturdy Frame:The bed is long-lasting with frame made of solid metal frame structure and metal slats support,No box spring needed,This bed frame is capable of supporting up to 600 LBS,Which is built to withstand the test of time.