Spa Sensations 4" Thick Memory Foam Mattress Topper - QUEEN Size Premium quality 4.0" (1.5" memory foam + 2.5" high-density foam) Temperature-sensitive visco-elastic foam responds to body heat, and molds itself accordingly Deluxe, all-natural hypo-allergenic jacquard cover included Simulates a flotation effect to help ensure total relaxation Queen: 80" x 60"