★This bed is "customer assembled furniture"★ For "customer-assembled furniture," we ask that customers unpack, assemble, and install the product themselves. Compact and sturdy bunk bed with urethane mattress A compact and sturdy bunk bed that fits in a 4.5 tatami mat room! Short size with inner dimensions of approximately 180cm!! ■Sturdy design that can withstand a load test of 7000N (approximately 700kg)! Upper and lower beds are completely fixed ■Compact, short size that's perfect for small children's rooms! Most bunk beds are usually over 2 meters in size. This product is a compact short size with a length of 189cm!! We aimed for a smart design that looks neat and compact. We also offer semi-single size widths. The low height design makes it easy to lift and lower the futon, and the bed is at a height where you can see your child's sleeping face. ■ Strengthening the structure by installing supports The structure was strong enough without these supports, but we put our customers' safety first and installed them to achieve the maximum load-bearing capacity within the cost!! Without the support posts, the load capacity is reduced by half. *These bunk beds cannot be separated for use. To maximize strength, the upper and lower beds are completely fixed together.