The Storkcraft Caribou Twin Over Twin Bunk Bed offers you a unique and versatile way to outfit your spare room or child s bedroom with sleeping spaces. This set includes two matching bed frames designed to stack together as bunk beds (frames can also be assembled for separate freestanding use). The frames are built using thick durable wood solids and are finished in your choice of available color option. A ladder and safety rails help make the top bunk safe. The beds are outfitted with slat platforms that eliminate the need for box springs.