Ultimate Sleep Queen - 2 Inch Natural Latex Foam Mattress Pad Topper - Medium Firm 2-inch Medium-Firm Latex Mattress Pad - Medium Firm density latex is 5.3 lbs, ILD of 24 - 27 lbs. Superior Orthopedic Support 100% Natural Latex--the most natural latex found anywhere, Dunlop latex. Ultimate Sleep's most ideal density for those who prefer a medium firmness that still retains a comfortable level of softness. Ultimate Sleep Brand Latex Sold by Ultimate Sleep, Inc Certified 100% Natural