Finding the perfect mattress is essential to a good night’s sleep. However, it is important to remember that your comfortable mattress must be paired with the right foundation as well. The Serta Sleep Retreat 9” foundation is made to wonderfully support your cozy mattress and enhance the overall durability of your mattress set. As the base to your mattress set, this foundation complements your mattress by providing the support needed to keep your mattress intact and resist sagging over time.