This topper has 1.5” loft of 100% washable wool and natural cotton the makes the myTopper extremely cozy and comfortable. Great for year-round comfort regardless of season. Lasts for many years with proper care. The topper’s Shropshire wool provides a down-type feel with wool fibers that are proven to create a plush and cozy experience. Gives soothing pressure relief on sensitive areas of the body. Keeps dry without feeling clammy. Wool has shown to greatly out-perform and out-last other fibers used for bedding.