MIG Australian Premium Grade Deluxe Quality Reversible Wool Underlays are made from 100% Australian Wool, with a 100% Cotton Fabric cover. Fully reversible - cool in summer, warm in winter. Provides effective control against dust-mites and resistance to the growth of bacteria, mould and mildew. These quilts are individually designed to give you the healthiest and most comfortable nights sleep. Machine washable, with a 6 year guarantee.