Save on energy and enjoy soft fluffy laundry without exposure to harsh chemicals. Pure Wool Tumblers are an ideal alternative to dryer sheets. Tumblers work by lifting and separating laundry, increasing the flow of air as they gently tumble around your dryer. These wool balls cut drying time by 20 to 30%, soften clothes and reduce wrinkles, and are handmade of 100% premium New Zealand wool roving and then felted to ensure they will not leave fluff on your laundry. They last 1000+ loads and can be scented with your favourite essential oils to give your clothes a light scent.