Made of 100%, New Zealand Wool, this four pack of dryer balls will leave your laundry soft, fluffy, and free of static cling. Use four dryer balls in a standard load or six for a load of towels. Wool dryer balls will reduce drying time by 20%, saving you time and money. This four pack comes in a small muslin sack. Use over 1,000 times. Wooly Felted Wonders.