These alpaca/sheep dryer balls are locally made, with a core of our alpacas' fleece (fiber that wasn't good enough to be made into yarn). The outer layer is wrapped in sheep roving. Dryer balls are a wonderful alternative to commercial dryer sheets, saving money and exposure to chemicals. They fluff up the laundry, dry clothes quicker, and remove static! Wool dryer balls last indefinitely, as they just felt more with use. Important - use "medium" dryer heat, not "high" for best results. Set of 3 balls for $20.