When washing you might have noticed, that towels and sheets always seem to take two runs through the dryer in order to get fully dry. In addition to helping cut drying time, the Smart Sheep 6-Pack Premium Wool Dryer Balls provide a natural way to fluff and soften your clothes. They last for thousands of cycles and replace dryer sheets and fabric softeners. While they do sound like tennis balls in my dryer, the end result is worth it. Get them on Amazon!