Fluff and Tumble Dryer Balls are a powerful and natural fabric softener to use in your dryer. They bounce around to naturally separate and create space between your freshly laundered clothes, allowing the hot dryer air to circulate better and soften fabrics. Made of 100% natural wool, these chemical-free dryer balls help reduce drying time, static cling and wrinkles. Wool is a sustainable resource and is naturally biodegradable. Use these eco-friendly dryer balls instead of a fabric softener or dryer sheets to radically reduce harmful chemicals in your home.