Bartly /BedMaximizing sleep space is achieved with the stylish Bartly Collection. This transitional twin over twin bed is featured in a natural pine finish making it an appropriate choice for a number of youth bedroom settings. Features Made of pine veneer, wood and engineered wood Natural pine finsh Pull out trundle bed with casters Foundation box spring not required Assembly required Recommend to use twin mattress no thicker than 6 inches for bottom trundle