Keegan memory foam 8" twin long mattress by Coaster NEW SPECIAL ORDER CO-350063TLRetail price $413. Special order only; usually takes 5 14 days to come in. 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 full size mattress is an excellent choice for most spaces, the Keegan Collection offers a wide range of mattress sizes