Of all the innerspring mattresses Serta® makes, the Theodore has consistently provided a more perfect level of support for older adults than any other mattress, with two choices: firm and plush. Add the fabric wrapped pocketed coils, and the Park City mattress helps reduce and eliminate tossing and turning completely! The foam encased coil spring increases the sleeping surface all the way to the edge of the mattress, allowing for full width sleeping surface and a stronger edge support.The flexibility of this mattress allows it to be used with the Serta® Motion or Essentials Adjustable base to reduce and eliminate the most bothersome sleep problems including back pain, tossing & turning. The Park City has a 10-year warranty. Compatible with Adjustable Foundations. Queen set for $899.