Our 3" Euro pillowtop mattress is designed for a truly luxurious sleep experience, with added comfort and specialty cut layers that elevate relaxation. At its core is a targeted support gel-infused memory foam crown, offering pressure relief where you need it most. Beneath that, 800 individually wrapped coils- including a 4" layer with reinforced perimeter support- ensure long-lasting durability and minimized motion transfer. A quilted zoned cooling cover combined with gel-infused foam layers promotes breathable, temperature-regulated sleep. To top it off, our patented Spinal Zone support system enhances durability while helping to reduce back pain and stiffness. Engineered to support your new Mattress with a perfectly solid, flat surface, the Fieldcrest 9" flat foundation is designed to take the place of a traditional box spring and can be placed directly on your existing bed frame. Designed and upholstered to create a seamless look with your new mattress and complement your bedroom decor—while providing stationary support. Set includes mattress plus box spring/foundation/base. Larger size mattress sets may feature 2-piece side-by-side foundations for easier navigation in tight spaces.