Matisse Oslo Round Bed with Headboard Lights King Size (Black). Attractive Oslo bed made from wooden frames and upholstered with durable synthetic leather. The headboard comes with light built in.Mattress is supported by Slats, Mattress is not included. 120"w X104"L X 37"h Night Stands are 19" round. Slats are 5.5" above ground. Mattress is not included.