Ultimate Sleep 2 Inch 100% Natural Dunlop Latex Foam Mattress Pad Topper, Standard King Add a layer of 100% Pure Natural Latex: AVAILABLE in ALL SIZES, as well as 2", 3" and 4" profiles Made of pure "Green" (Natural) 4.75 lb density (16-18 IFD) latex Naturally hypoallergenic and anti-microbial with air ventilation perforation to keep your topper fresh and dry Latex is renowned for superior support: Providing a greater range of both firmness and softness Superior Orthopedic Support