2 Dryerballs Tumble Dryer Balls 5 "Miracle product" Mrs Tavender 27 February 2019 Thought I’d ruined my puffa jacket as when I washed it the padding bunched up into balls in each section. No amount of tumble drying made a difference and the jacket looked like a kagoule. Bought the dryer balls as nothing to lose in doing so and it worked! The jacket returned to its normal cosy self. Brilliant product.