Includes 20 solid washer balls, 4.5 cm diameter, random color Materials - These laundry balls are made of high-quality solid soft PVC, durable and soft, will not cause damage to clothes and washing machines, and have good elasticity and will not fade Use - The unique convex concave design greatly improves the cleaning efficiency and saves a lot of water and energy. The clothes are more fluffy and do not twist. Effectively separate clothes and naturally soften fabrics. Reusable - High quality cleaning balls are durable and reusable. 10 to 15 balls are ideal for washing materials weighing about 10 kg. You can put 8-10 balls when washing pants and coats with hard cloth. The washing ball can make the washing machine and clothes constantly rub to produce greater impact. Wash more clothes, but don’t damage them.