Sleep three in the space of one with this twin-over-twin bunk bed that adds a pull-out trundle beneath the lower bunk for sleepovers and growing families. Full-length guardrails on the upper deck and an integrated ladder provide safe, confident access for children and teens, while metal slat support on all three sleep surfaces eliminates box spring costs. Braking casters on the trundle roll out smoothly and lock in position for a stable third sleeping area that tucks away during daytime hours.