Discover the ultimate in sleep luxury with the Beautyrest Black Series One Extra Firm Mattress. This mattress features Beautyrest's most advanced sleep system, incorporating Triple-Stranded Pocketed Coil® Technology for maximum individualized support. Enjoy the best in motion separation, pressure relief, and temperature management. The Series One delivers advanced support and all-night heat transfer, with contouring foams for a cool, comfortable sleep. Perfect for those who prefer an ultra-supportive feel with no sinking sensation, this extra firm mattress is ideal for back and stomach sleepers. Indulge in a superior sleep experience with Beautyrest.