[Twin to King Design] When the trundle is pulled out, this daybed can be expanded from twin size to an irregular King size. The twin size is suitable for children or daily use, but when the guests arrive, King size is the best choice. [No box spring needed] This daybed is a valuable choice as it does not require a box spring or foundation. Just place your mattress on top and enjoy it. [Suitable for Different Places] This beautiful daybed is great for a kids room, guest room, a living room or anywhere you need it. This bed makes an unique design to fit any living interior. [Overall Dimensions] Overall Dimensions: 80"L x 42"W x 33"H. Mattress not included.