The Rockwell Luxury Firm Mattress offers performance that keeps you cool. This mattress features stretch-knit covering made with eco-friendly, breathable Tencel® fibers that wick away moisture. An air vent system with Inetllicoil® technology melds ventilated coils with external air vents to increase breathability and promote a cool, comfortable night’s rest for sleepers of all body types. Ultra-soft gel foam, extra-firm gel foam, and memory foam provide plush comfort and premium pressure relief for all-night support, while a PrecisionedgeTM system with a high-density coil border provides durable, edge-to-edge conformability.