Sturdy & Stable Construction: Supported by 12+12 metal slats, the twin over twin bunk bed features great sturdiness and bend resistance, which can bear up to 330 lbs respectively. Solid screws connection also makes it sturdy enough to serve for a long time. Safe & Convenient to Sleep on: For safety concerns, the bunk bed is surrounded by 10” full-length guardrails to prevent your kid from falling down. What’s more, the integrated ladder offers an easy access to the upper bed. Space-saving Twin over Twin Bunk Bed: This space-saving metal twin over twin bunk bed suits for those families who has low ceilings, and also fit those have small children. The lower bed frame is close to the floor without worrying about getting hurt.