This mattress from Simmons Beautyrest offers wonderful support and supreme comfort. Firmness: Plush Quilting: FR fiber, 5/8" PurFoam™ Plush, 1" convoluted foam Construction: 800 Density Beautyrest Pocketed Coil-provides motion separation, conforming comfort and support. Coil gauge: 15 1/2 ga. Edge support: 2 rows 13 3/4 ga. per side Coil support: 1/2" Energy Foam™- adds greater stability. 5 slatTriton foundation-increases foundation strength and durability. No flip design. Simmons Beautyrest Classic Alder Bend Queen Mattress Set 10 Year Warranty