Nature&rsquo;s Sleep Cool IQ Full Size 2.5 Inch Thick, 3.5 Pound Density Visco Elastic Memory Foam Mattress Topper with Microfiber Fitted Cover and 18 Inch Skirt The Nature's Full Sleep Mattress Topper is 2.5 inches thick and is constructed from 3.5 pound Cool IQ Visco Elastic Memory Foam Lighter foam visco-elastic technology contains larger open memory foam cells that react to the sleepers body increasing air flow, making the material exceedingly breathable Naturally hypoallergenic, anti-microbial and anti-bacterial to provide relief for those suffering with allergies or asthma Minimizes pressure points while sleeping on any mattress to relieve tossing and turning, and to reduce back, neck, hip and shoulder pain aches Includes a plush microfiber cover that slides over the topper and keeps your mattress protected and in place