Packing:10 pcs Laundry Balls.Color:Gray&white. Material: The Tumble dryer balls are made of high-quality TPR, Size:6*3.7 CM. When washing, simply throw the dryer balls into the washing machine, 4-6 at a time is best. Reusable Laundry Balls for Washer: Made from durable, no toxic materials, these balls can be used repeatedly in both washers and dryers, helping to clean clothes more effectively while reducing the need for harsh detergents or Substance. Wide Applications:Put the laundry balls in the washing machine to prevent clothes from getting tangled, no harm to clothes or washing machine, good for lint or pet hair to come off clothes.