Experience the ultimate in sleep support with the 2022 Stearns & Foster Estate 13.5" Ultra Firm Tight Top Innerspring California King Mattress. Designed for those who prefer a firm sleeping surface, this mattress is perfect for back and side sleepers. With adjustable base compatibility, this innerspring mattress ensures a comfortable and restful night's sleep. Made in the USA, its navy blue color adds a touch of sophistication to your bedroom.