★This bed is "customer assembled furniture"★ For "customer-assembled furniture," we ask that customers unpack, assemble, and install the product themselves. Designer bunk bed with thin and lightweight pocket coil mattress ■No.1 in furniture retail store delivery record!! This bunk bed manufacturer has the highest sales volume in the furniture store industry! The reason for our No. 1 track record is... So sturdy!! Even if an adult man pushes it, it won't budge. It's designed to be sturdy and durable. It is designed to withstand a load of 400kg, so adults can ride it too! The ladder is a diagonal type that allows for stable access to the upper rung, and it also comes with a support bar, making it a safe design.