LYDIA PLUSH This HYBRID  Designed to relieve pressure in the shoulder and hip areas, the latest Spring Air Back Supporter TM beds each feature Cooling Covers, multiple levels of high quality foam and 25% more supportin the center third.  From the very beginning, more than 90 years ago, comfort, pressure relief,proper spinal support and alignment have been a fundamental focus in all of our mattress designs FEATURES: 13” Mattress Height Enhanced Cooling Cover with Wicking Technology Back Supporter TM technology for more lumbar support. 25% more steel coils in the center section 1 Full Layer Cool-Gel Infused Memory Foam 14/15 gauge, Power Packed and Zoned, Individually Pocketed Coil Unit; 884 Coils in Queen and 1088 Coils in King Foam Encasement giving more sleeping surface and lasting edge to edge support 2 Cooling Layers with a Plush Comfort Level All wood foundation with extra supports, nailed and glued 15 year limited pro-rated warranty CertiPUR-US certified foams Made in the USA