Sourced from humanely sheared sheep, Molly's Suds Wool Dryer Balls are great for all laundry, including towels, comforters, clothing, baby laundry, delicates and cloth diapers. They are hand felted in Nepal and last about 1,000 loads! Simply place all three Wool Dryer Balls in your dryer and they will tumble happily there year after year. Wool does not coat the fibers of fabrics with toxins like conventional fabric softeners do, so they will not prevent static cling; however, they will save you money, reduce wrinkles and decrease your drying time up to 30percent. These are a laundry win! 100percent New Zealand wool from family-owned farms.