Twin Wool Filled Mattress Pad -39"x76" -Natural Cotton 100% American made in our historic woolen mill in Frankenmuth, Michigan! Our bedding is filled with 100% all natural wool. Wool is naturally hypo-allergenic and repels dust mites. Wool naturally regulates your temperature and keeps you comfortable in all seasons. Our wool comforters are 100% natural. We use 100% all natural wool batts that are washed in bio-degradable and covered in 100% all natural cotton.