With stairway attached to the bed, this kid-friendly bunk bed offers easy and safe access to the top bed. Full-length guardrails attached to the top bed ensures safety and sturdy frame provides stability. The down bed can be converted from twin size to full size, allowing flexible use of it. The stairway comes with two drawers, along with the space-saving staircase and inseparable under-bed drawers with wheels can store away your kids toys and other stuff. Truly an ideal space-saver, this bunk bed is a perfect choice for those in pursuit of being organized. Dimensions : ☑Upper bed:42.4’’ x 75.9’’ ☑Down bed:42.4’’ x 75.9’’ ☑ (Normal/ stretch) :57.5’’ x 78.7’’ ☑Total height:63.6’’ ☑Upper bed Weight capability: 150lb ☑Down bed weight capacity（twin/full）:200lb/ 400lb ☑Upper bed mattress thickness:6’’ ☑Down bed mattress thickness:8-10’’ Specifications: ➡Material:Pine wood+MDF ➡Size:Twin over twin/full ➡Numbers of slat(upper/down):10 ➡Function: Twin-over-twin/full bed ➡Decoration:Convertible twin/full size down bed ➡Numbers of package:3 ➡Spring box:No need ➡Assembly required:Yes Package Size: ↪Package 1: 42.91x25.20x8.27inches, 85.98lbs ↪Package 2: 80.71x15.35x6.30inches, 90.39lbs ↪Package 3: 50.39x20.08x6.69inches, 66.14lbs