This bunk bed comes with excellent storage function, four staircases, space-saving storage shelves and two inseparable drawers, offering great organization function. The frame is made of solid wood which is durable and sturdy, allowing long-time use. Safety guardrails attached to the top bed, offering extra safety. For added flexibility, this bunk bed is allowed to be converted to two separated beds, you can place them according to your needs. Description Material: Pine wood+MDF Size: Twin over twin Numbers of slat: (upper/down)10 Function: Twin-over twin bed Decoration: With drawers Numbers of package: 3 Spring box: No need Assembly required: Yes Dimensions Upper bed: 42.4’’ x 78.7’’ Down bed: 42.4’’ x 78.7’’ Total height: 62.2’’ Upper bed weight capability: 150lb Down bed weight capacity: 200lb mattress thickness: 6’’