The Futon Shop 2-Inch Pure Wool Mattress Topper, King, Natural 21-25 Pounds of All Natural Chemical Free Virgin Wool 100% All Natural Wool with Poly Cotton Case; Measures 72 Inches by 84 Inches 10-12 Year Life Expectancy; Chemical Free; Temperature Regulating; Hypoallergenic; Anti-microbial, Anti-bacterial; Dust Mite Resistant