This budget-friendly firm twin mattress and foundation set offers a comfortable night’s sleep at a comfortably affordable price. At the core of the mattress: 13.5-gauge tempered Bonnell steel coils that provide maximum support for a sound sleep. Quality foam and quilted polyester fabric add an enhanced level of comfort. The included foundation is an all-in-one support system that takes the place of an ordinary bed frame and box spring. The metal unit sets up quickly and without using any tools, creating a sleep haven with unwavering support. Included brackets attach the riser to a headboard. Even better: The clearance from frame to floor is incredibly spacious and ideal for under-bed storage.