The Sealy Posturepedic® Plus level offers additional technology for superior support that's built to last. The advanced Posturepedic® Plus support system features our exclusive PrecisionFit™ Coils, arranged right where you need them to help maintain natural body alignment and reduce nagging bed aches. These mattresses are also surrounded by our DuraFlex Coil Edge™ that provides great support all the way to the edge of the mattress. Each of the coils in the Sealy Posturepedic® Plus level in individually encased to reduce motion transfer, helping you feel less movement from your partner throughout the night. Plus, Surface-Guard Technology™ kills bacteria on the surface of the mattress, protecting it from common allergens which can lead to a better night's sleep. And a MoistureProtect™ cover helps wick moisture away from your body to keep you cool and comfortable while you sleep. This mattress was designed and built in the USA and includes a 1o-year limited warranty, so you can rest easy with comfort you can count on. The 9" Sealy® StableSupport™ Foundation has been engineered to provide the ideal surface for Sealy® mattresses. The solid, flat construction ensures that your bed will maintain its comfort and support for years to come, while a high-quality navy fabric complements the overall aesthetics of every Sealy® mattress. The 9" height matches a traditional box spring and has been extensively tested for durability and are covered by a 10-year limited warranty from Sealy®. 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. This mattress meets the requirements of 16CFR Part 1632 (federal flammability (open flame) standard for mattresses and mattress pads This mattress meets the requirements of 16CFR Part 1633 (federal flammability (open flame) standard for mattress sets) when used with foundation