Quality materials and durable construction ensure you can feel good about this mattress investment for years to come. The thick CertiPUR-US certified foam cradles every contour of the body, providing a satisfying combination of comfort and support. While this twin XL mattress is a great fit for many spaces, the Keegan Collection offers a wide range of mattress sizes to accommodate any bedroom. Length: 38.0 Width: 80.0 Height: 8.0