Save money and time with Dryerballs®. Tumble dryers are notoriously expensive to run, but by using Dryerballs® you will reduce drying time by 25% and have soft clothes naturally without fabric softeners. Dryerballs® are completely non-toxic and allergy-free, they are an environmentally friendly way to soften your laundry. Scientifically tested and proven to soften fabric naturally, reduce drying time, make ironing easier and reduce lint and static. 2 balls per pack. Reusable.