This Simmons Beautyrest World Class features a 980 Density Pocketed Coil® unit that gives superior support with unique Pocketed Coil® springs that provide unsurpassed motion separation while conforming to your body's unique shape. The Ultra 360° Foam Encasement features 3 inches of high density foam edge support for sleeping comfort right to the edge. . Luxurious and attractive stretch knit fabrics soothe with a soft hand and natural fiber blend. The durable design of the Simmons Triton® Foundation supports up to 2,000 pounds of pressure. The Beautyrest World Class offers a Level 2 MSI. The heavier gauge Pocketed Coil® springs provide enhanced support and firmer feel while the firm premium foams in the upholstery provide supportive cushioning. Visco Memory Foam conforms to your body giving exceptional pressure relieving support and maximum comfort.