New Zealand 100% Natural wool dryer balls. Toss these into your dryer with your wet laundry to dry faster and soften clothes. They help laundry stay untangled during the drying process. All-natural and will last a long time. Wool balls are much quieter than rubber balls tossing around in the dryer. Wool dryer balls are gentle on all clothing and fabrics. You will receive 8, 3 inch dryer balls (they are about the size of a tennis ball) with this order.