This twin bed frame is constructed of solid wood which is heightened durability and stability The Sleigh Bed headboard and footboard are designed to be hollow which can reduce the feeling of heaviness and increase the sense of nature, pure and fresh The platform bed fits most Twin-size mattresses and does not require a box spring. Mattress is not included with this Twin Platform Bed The Twin Platform Bed with Headboard & Footboard is a good choice for a living room or guest bedroom Easy to assemble, hardware and instructions are included