Highly recommended for many years by prominent chiropractors and physical therapists for its WINNING combination of comfort and support, this is the mattress for which Dixie Foam Beds is famous. It is composed of a two and a half inch layer of high density super soft foam atop a five inch base layer of medium or extra firm XL foam.  Also available in custom sizes.

Specs

5" base layer: Density=2.8 lb/cub ft
  Firmness=35 ILD (Medium Firm) or 45 ILD (Extra Firm)  
2.5" supersoft topper: Density=1.8 lb/cub ft
  Firmness=16 ILD
Cover: Poly/cotton stretch-knit zippered cover