SnugFleece SnugSoft Imperial Wool Mattress Topper Pad Cover KING SIZE 78 X 80 Wool Made in USA SnugSoft is Machine Washable! The SnugSoft Imperial is the medium version of the machine washable models at 1.25 In. Wool Pile Height. The Snugsoft line, due to its machine wash-ability, makes it ideal for infants, children and the elderly. Comes with 2 In. corner straps. Machine wash in cold water and machine dry on low, or line dry. Medium plushness and wool height (1.25 Inches), and with the added convenience of machine wash-ability.