Twin over twin metal bunk bed stacks two sleeping spaces to free up floor area in shared rooms, youth hotels, or dorms. Heavy-duty metal slats support up to 400 lbs on the upper bed and 400 lbs on the lower bed while removing the need for a box spring, helping streamline setup. Full-length 10-in guardrails run along the top bunk to help keep sleepers in place, and the integrated ladder provides direct access to the upper level. The frame fits standard twin mattresses for straightforward pairing with existing bedding.