LittleMissMatched SWITCHaroo Full Size Loft Bunk Bed Loft has heavy gauge metal tubing, full-length guardrails, and sturdy welded metal slat system for mattress support Ladder can be positioned on both sides of the bed. Uses a standard full size mattress (sold separately) Includes (18) flippable panels Meets all minimum requirements of ASTM F1427-07 and U.S. CFR Title 16 Part 1303