Dryer balls are nature's fabric softener and help remove moisture from fabrics to reduce drying time. They are a wonderful choice for those with chemical sensitivities or anyone looking to reduce their chemical footprint. Our dryer balls are made from 100% wool sourced from New Zealand and are environmentally friendly and long lasting. Set includes 6 extra-large, 9 CM, balls and storage sack. Use 3-6 balls dependent upon load size. Replace when worn every 12 months or as needed based on use. Add a touch of aromatherapy to laundry by adding a few drops of essential oil to dryer balls before adding to dryer. Select your choice of our 100% essential oil blend complementary with your purchase.