Set of four 100% wool balls, HANDMADE IN THE USA Replaces dryer sheets, safe for all clothes. Shortens drying time (use 4-6 balls for medium loads) Softens clothes naturally Helps eliminate wrinkles and reduce static SET OF FOUR 100% wool balls MADE IN THE USA 100% HANDMADE from domestic wool in support of American farmers All Natural, softens clothes naturally, safe for all clothes Shortens drying time (use 2-3 for small loads or 4-6 for medium loads) Replaces dryer sheets, and will last for 1000+ loads