Dress your little one's bedroom in simple, thoughtful style with this twin-over-twin/ full bunk 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. Description: Function: Bunk bed Material: Pine wood+MDF Numbers of slat(upper/down): 10 Number of Package: 3 Spring box?No need Assembly Required?Yes Dimensions: Upper Bed : 42.4'' x 75.9'' Down bed(Normal/ stretch):42.4'' x 75.9''/ 57.5'' x 78.7'' Total height: 63.6'' Upper bed Weight Capacity: 150LBS Down bed weight capacity(twin/full): 200LBS/ 400LBS Recommended Mattress Thickness(Upper/Down): 6''/8''-10'' Notes: Manual measurement has been used, there may be some reasonable error. All the pictures are taken by actual samples, slight chromatic aberration may occur due to lighting or display.