Solid poplar and engineered wood in a Soft Chalk finish. Covered in a child-safe, water-based finish on all sides. GREENGUARD Gold Certified. This low-emitting product has been screened for over 10,000 chemicals and VOCs. Rigorously tested to meet or exceed all required and voluntary safety standards. Mattresses sold separately. Solid spruce wood slats (included). Accommodates standard Twin-sized mattresses for the bottom bunk and bunk mattress for the top bunk; do not use box springs. Arch on one side only. Ladder side is fixed and cannot be moved. Minimum recommended ceiling height: 8'. Made in Vietnam.