Choose the Sealy 9 Inch Flat Foundation, Twin XL for a durable, high-quality foundation that complements your mattress perfectly. Crafted from a sturdy combination of wood and fabric, this foundation offers reliable support for your mattress. Its extra firm comfort level ensures optimal spinal alignment for a restful night’s sleep.Product Details:• Features wood and fabric materials• Has an extra firm comfort level• Designed especially for Twin XL beds