Features: [Steel Construction] This twin over twin bunk bed made of High quality sturdy steel structure features solid slats support and heavy-duty strength,no box spring needed,mattress are not included.[Separate into 2-Twin Beds] An ideal space-saver and a perfect addition for your family,the Manhattan bunk bed efficiently accommodates family,allowing them the freedom and space to host friends and also offering a sleeping solution for family that share bedroom space-split the single bunk into two individual beds with ease if you move into a bigger home or your needs change. [Secured Guardrail] 10.5 inch High safety guardrails of top bunk prevent child from falling.That will allow you to sleep safely and sleep tight over night.[Anti-Slip Widen Pedals ] A sturdy and durable vertical ladder is securely attached into the frame notch for simple and safe climbing to the top bunk.Small entry at the top of the ladder so you don"™t have to climb over the railing.Specifications:Product Type: Bunk BedColor: White/Black/SilverSize:Twin-Over-TwinMaterial: MetalWeight Capacity:Upper bed:250LBS,Bottom bed: 350LBSNumber of Bed Slats:21+21Recommended age:6+Recommend Mattress thickness: Upper bed: 6",Bottom bed: 8".mattress not included.Assembly Required:YesBox Spring Required: NoTools Included: YesSuggested Number of People: 2Weight & Dimensions:Overall Product Dimension: 78.1"Lx41.4"Wx65.3"HNumber of Package: 1Overall Product Weight: 71 LBSPackage Dimension: 79.53"Lx13.58"Wx6.89"H,77.16lbs.Notes:1.Manual measurement has been used,there may be some reasonable error.2.All the pictures are taken by actual samples, slight chromatic aberration may occur due to lighting or display.