【Space-Saving Design】This twin over twin bunk bed configuration maximizes room space while providing a comfortable sleeping area. 【Durable Construction】this twin bunk beds for adults with heavy-duty metal slat system supports up to 440 lbs per bunk for long-lasting stability. 【Safety Features】13 inches High guardrail and built-in ladder with flat rungs ensure this kids bunk bed twin over twin security and easy climbing.