This mattress from Simmons Beautyrest offers wonderful support and supreme comfort. Firmness: Plush Firm Quilting: FR fiber, 5/8" PurFoam™ Plush, 1 ½" convoluted foam Construction: 800 Density Beautyrest Pocketed Coil-provides motion separation, conforming comfort and support. Coil gauge: 13 3/4 ga. Edge support: Total Surround BeautyEdge with Quantum Lock-adds foam rail integrity and sleeping comfort right to the edge. Coil support: 1/2" Energy Foam™- adds greater stability. 5 slatTriton foundation-increases foundation strength and durability. No flip design. Simmons Beautyrest Classic Cold Spring Queen Low Profile Mattress Set 10 Year Warranty Image shown is Queen Size Mattress Set with queen boxspring