Durable Build: Kids’ bunk bed is built with durable engineered wood and color-matched hardware to balance sturdy construction with sleek style. Each bunk has wooden slats and a metal support bar that contribute to a 400 lb. weight capacity per bed. Safe for All Ages: This twin over full bunk bed for kids has 14” guardrails for secure sleep, making it safe for younger kids. Flexible Design: Ladder can be installed on either end of this full under twin bunk bed for kids for a design that best fits your space. Easy Assembly: Twin over full-size bunk bed is easy to put together with necessary tools, hardware, and instructions included. Dimensions: Full twin bunk bed measures 80.75” L x 57” W x 62.25” H. Wood bunk bed is compatible with standard twin and full-size mattresses between 5 and 8 inches thick.