Sleep Master 8-Inch Tight Top Pocketed Spring Mattress and Platform Metal Bed Frame/Mattress Foundation, Twin X-Large Mattress layers include: 1" super soft foam quilted into the cover and a 7.5" iCoil base ICoil system includes hundreds of independent coils minimizing motion transfer Mattress is compressed and ships in a small box. Smart will ship is separate box Steel bed frame eliminates the need for a box spring Limited 5 year warranty