[Space-saving Design] The twin size down bed can be pulled out as a double twin platform bed. Add the trundle, you will have 4 beds to accommodate your friends or over-night guests. [Safety Guaranteed] Full-length guardrails on the upper bunk prevent accidental falls. The staircase tightly attaches to the bed for easy access and wobble-free footing. [Convenient Design] The ladder can be placed on either side of the bed according to your needs. [Easy Assembly] Each order comes with a clear and detailed assembly instruction guide and all necessary tools are provided to get your bed assembled in no time.