Dryer balls Dryer balls Dryer Balls 100% Dartmoor Wool Dryer Balls help air circulate in tumble drying, are more environmentally friendly than plastic dryer balls or dryer sheets, and don't clatter around like plastic dryer balls £2.00 Out of stock. Dryer balls can help air circulate in tumble drying and reduce drying time by up to 25%. Their action allows clothes to soften naturally thus removing or reducing the need for chemical softners. Our dryer balls are far more eco-friendly in their production, use and disposal than plastic dryer balls or dryer sheets. They are silent in use With appriopriate and care your dryer balls should be reusable for approximately 4-5 years Dryer balls are roughly the same size as tennis balls, but because they are a hand made product, all vary slightly. Results will be dependant on proper use, load size and on the efficiency of your tumble dryer. Wool from sheep that graze in Lydford on Dartmoor National Park. 100% biodegradeable.