The St. Mark mattress from Simmons Beautyrest, offers value and blissful comfort. Plush Firm Super Pillow Top Airfeel™ foam PurFoam™ Luxury Firm PurFoam™ Plush Coil unit: 1000 FEC Series 8" (.083) Energy Foam™, part of Simmons' patented no-flip construction The Triton foundation reduces motion across the mattress and provides unparalleled durability NxG Memory Foam Layer Simmons Beautyrest World Class St. Mark Queen Low Profile Mattress Set 10 year non-prorated warranty. Mattress height 14.5 inches. Image shown is Queen Size Mattress set, not low profile.