The 8 Inch Twin XL + Queen Comfort Memory Foam Mattress Bundle makes it easy to complete your twin XL over queen bunk setup in one simple step. This set includes one 8-inch twin XL mattress and one queen mattress, both designed with medium-firm support for the right mix of comfort and stability. CertiPUR-US certified and hypoallergenic, each mattress is made with comfort you can feel good about.