Covering: Selected high-density 100% Nano-silver microfiber. With well treated with the latest Nano-silver advanced technology, soft and luxurious Nano -silver microfiber indulges in the comfort of such hygiene from sterilization, deodorization, and anti-mildew. Filling: 100% thermal Microfiber. Anti-bacterial: Bacteria are mutated by Nano-silver technology, reduce bacterial metabolism to death. Anti-mildew: the Nano-silver technology sterilizes over 650 types of harmful bacteria and that prevents fungal dust mites & mold propagation. Deodorant: effectively break down the musty odor, smoke and other unpleasant odor. Self-purification: decompose organic stains on the fabric, so that dirt is not easy attachment to make it easy to clean. Anti-static: With the surface anion, it naturally gives anti-static characteristics. Soft touch: soft, fluffy, elastic, warm.